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{{quote|It's far from being all over...|The Doctor}}
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{{Infobox ClassicTV|
{{real world}}
story name= The Tenth Planet |
{{ImageLinkTV}}
image=[[Image:tenth_planet.jpg|250px]] |
{{Infobox Story SMW
series=[[Doctor Who]] - [[TV stories|TV Stories]] |
|image                 = Tenth planet.jpg
number= [[Season 4]] |
|novelisation          = Doctor Who and the Tenth Planet (novelisation)
story number= 29|
|season number         = Season 4 (Doctor Who 1963)|
doctor=[[First Doctor]] (regenerates)<br> [[Second Doctor]] (introduction at end) |
|season serial number  = 2
companions= [[Ben Jackson]]<br/>[[Polly]]|
|story number           = 29
enemy= [[Cyberman|The Cybermen]] |
|adapted into          = Regeneration (home video)
year= [[South Pole]], [[Snowcap]] [[Space tracking station]], [[1986]] (December) |
|doctor                 = First Doctor
writer= [[Kit Pedler]] and [[Gerry Davis]] |
|companions            = [[Polly Wright|Polly]], [[Ben Jackson|Ben]]
director= [[Derek Martinus]] |
|featuring              = [[Second Doctor]]
producer= [[Innes Lloyd]] |
|enemy                 = [[Krail]], [[Regos Krang]]
broadcast date= [[8th October|8th]] - [[29th October]] [[1966]] |
|setting                = [[Snowcap]], [[Antarctica]], [[December]] [[1986]]
format= 4 25-minute Episodes |
|writer                 = Kit Pedler, Gerry Davis
production code= [[List of production codes|DD]]|
|director               = [[Derek Martinus]]
previous story=[[The Smugglers]]|
|producer               = [[Innes Lloyd]]
next story=[[The Power of the Daleks]] }}
|epcount                = 4
|broadcast date         = 8 October - 29 October 1966
|network                = BBC1
|format                 = 4x25-minute episodes
|serial production code = [[List of production codes|DD]]
|series                = [[Doctor Who television stories|''Doctor Who'' television stories]]
|prev                  = The Smugglers (TV story)
|next                   = The Power of the Daleks (TV story)
|clip                  = Battle in the Snow Vs Cybermen - Doctor Who - The Tenth Planet - BBC
|clip2                  = Get me Geneva - Quick! - Doctor Who - The Tenth Planet - BBC
|clip3                  = First Doctor regenerates - William Hartnell to Patrick Troughton
|bts                    = Peter Capaldi's favourite classic episodes - Doctor Who Series 9 (2015) - BBC
|thwr = 231
}}{{you may|Mondas|n1=the titular planet}}
'''''The Tenth Planet''''' was the second serial of [[Season 4 (Doctor Who 1963)|season 4]] of ''[[Doctor Who]]''. It was the final chronological appearance of [[William Hartnell]] as the [[First Doctor]] and introduced [[Patrick Troughton]] as the [[Second Doctor]] in the final moments of part four.


'''''The Tenth Planet''''' was the second story of [[Season 4]] of ''Doctor Who'', and introduced both the [[Cybermen]] and [[regeneration]]. It was the final regular appearance of [[William Hartnell]] as the [[First Doctor]], and the first (uncredited) appearance of [[Patrick Troughton]] as the [[Second Doctor]].
Due to the fact that ''[[The Smugglers (TV story)|The Smugglers]]'' was the final story in [[Season 3 (Doctor Who 1963)|season 3]]'s [[production block]], however, ''The Tenth Planet'' was actually the first story produced in this season; from a ''production'' standpoint, this was [[William Hartnell]]'s only contribution to season 4. It also introduced the [[Cyberman|Cybermen]], who would become a longstanding enemy of the Doctor.


==Synopsis==
''The Tenth Planet'' was a major historical turning point for the ''Doctor Who'' series by employing a new concept that would come to be known as [[regeneration]]. This plot mechanic has contributed to its long run on television. Likewise, it introduced the idea the Doctor has multiple incarnations and can regenerate to coincide with the departure of an actor playing an incarnation to avoid cold transition from one actor to the next.


[[The Doctor's TARDIS]] lands at the [[Snowcap]] space tracking station at the [[South Pole]] in [[1986]]. The loss of a routine space mission and the appearance of a new [[planet]] in the sky herald the arrival of the [[Cybermen]] who are intent on the destruction of the [[Earth]] and the conversion of all [[Human]]s into Cybermen. [[Ben Jackson|Ben]] and [[Polly]] fight to save the world, but it is a battle that may prove too much for [[First Doctor|the Doctor]].
Hartnell returned to reprise the role of the First Doctor one final time in 1972-73's ''[[The Three Doctors (TV story)|The Three Doctors]]'' for the opening of the tenth anniversary season of ''Doctor Who'', but his poor health at the time of recording meant his appearances were reduced to pre-recorded video screen images.


==Plot==
Currently, the fourth and final episode of this serial remains missing from the BBC film archive, with only the regeneration sequence (since it was shown in a 1973 episode of ''Blue Peter'') and various other short clips existing intact. However, the missing episode has been carefully reconstructed in an animated format for the DVD release in 2013, and the 2017 story ''[[Twice Upon a Time (TV story)|Twice Upon a Time]]'' recreated parts of the missing episode for its opening sequence.
===Episode 1===
[[Image:Tenth_Planet_1_003.jpg|left|150px|thumb|[[Dan Schultz|Schultz]] and [[Glyn Williams|Williams]] in the ''[[Zeus IV]]'']]
The TARDIS lands at the South Pole where the 'Snowcap' space tracking station is monitoring the launch of the manned ''[[Zeus IV]]'' atmospheric testing probe in to Earth orbit. The Doctor, Ben and Polly are apprehended just as the ''Zeus IV'' space capsule is drawn off-course by an unknown force that is draining the energy of both the ship and the two pilots, [[Dan Schultz|Schultz]] and [[Glyn Williams|Williams]].  


Observing the crisis, the Doctor announces that he believes he knows the cause of the problems. However, [[Cutler|General Cutler]], the commanding officer of the Snowcap, refuses to take the Doctor seriously. It soon becomes clear though, that the force effecting ''Zeus IV'' is what appears to be a new planet which bears an uncanny resemblance to Earth.  
== Synopsis ==
Many years ago, [[Earth]]'s twin planet, [[Mondas]], drifted away to the edge of space. Its inhabitants grew weak, so their scientists created spare parts for their bodies. Limbs and organs were slowly replaced by metal and plastic. Emotions were removed. The [[Cyberman|Cybermen]] were born.


The Doctor’s prediction that they will soon receive visitors from the new world soon comes true when a spacecraft lands outside Snowcap. A detachment of soldiers sent from the base to investigate the TARDIS are attacked and ruthlessly killed by a group of tall, robot-like creatures with blank emotionless faces.
[[The Doctor's TARDIS]] lands at the [[Snowcap]] space tracking station in [[Antarctica]] in [[December]] [[1986]]. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the [[Solar system]].


===Episode 2===
The loss of a routine space mission and the appearance of that [[planet]] in the sky herald the [[1986 Cyberman invasion of Earth|arrival of the Cybermen]], who are intent on the destruction of the Earth and the conversion of all [[human]]s into Cybermen. [[Ben Jackson|Ben]] and [[Polly Wright|Polly]] fight to save the world, but it is a battle that may be the Doctor's very last.
[[Image:Tenth_Planet_2_001.jpg|right|150px|thumb|The [[Cybermen]] invade the [[Snowcap]]]]
While everyone is distracted by their efforts to land ''Zeus IV'' safely, the alien invaders are easily able to take over the base and render General Cutler unconscious. The base personnel and Polly plead with the creatures to allow them to save the lives of the ''Zeus IV'' crew, but the aliens proclaim that the lives of the humans are irrelevant to them. They reveal that that they are known as Cybermen and were once like human beings, but gradually replaced their bodies with mechanical parts and eliminating the 'weakness' of emotion from their brains.  


The Cybermen allow the Snowcap personnel to make contact with ''Zeus IV'', but it is too late to save them as the ship is dragged further away from Earth by the new planet and explodes.
== Plot ==
=== Episode 1 ===
[[File:Tenth_Planet_1_003.jpg|left|thumb|[[Dan Schultz|Schultz]] and [[Glyn Williams|Williams]] aboard the ''[[Zeus IV]]''.]]
The Snowcap space tracking station based on the South Pole is monitoring the launch of the manned ''[[Zeus IV]]'' atmospheric testing probe as it goes into orbit. The ship is manned by two pilots, [[Dan Schultz|Schultz]] and [[Glyn Williams|Williams]].


The Cybermen reveal that the new world is their home planet [[Mondas]] and that it is absorbing energy from Earth and will soon destroy it. They propose to take humans back to Mondas and turn them into Cybermen.
The Doctor, Ben and Polly materialise outside the underground bunker of Snowcap and are soon spotted by men watching the surrounding areas through a periscope. Men are scrambled out to collect the strangers. The Doctor, Ben and Polly willingly enter Snowcap.


Ben, who has been imprisoned in the base’s cinema projection room after attempting to kill a Cyberman, rigs up the projector to blind his Cyberman guard. Ben steals the Cyberman’s weapon and kills him. Sneaking back into the tracking room, he hands the cyberweapon to the revived Cutler, who kills the remaining two Cybermen. Cutler contacts Secretary General [[Wigner]] at [[Space Command HQ]] in [[Geneva]] and is informed that his son, [[Terry Cutler|Lieutenant Terry Cutler]], has been sent on a mission to rescue the doomed ''Zeus IV''.  
Inside Snowcap the Doctor, Polly and Ben are interrogated. [[General]] [[Cutler (The Tenth Planet)|Cutler]] is sent for and responds hostilely to the strangers. Cutler decides to put them in the observation room until he has time to deal with them later. Once there, the Doctor notices a calendar on the wall saying it is December [[1986]]. Ben is disappointed he won't be able to meet up with his ship but seems more interested when he discovers that space travel is the norm. This conversation is interrupted by a distress call from the ''Zeus IV'' space capsule which has been drawn off-course by an unknown force that drains the energy.


As Cutler makes plans to secure Snowcap from further Cyberman invasions, the radar technician announces that a fleet of Cyberman spacecraft have been detected and they are approaching Earth!
The pilots of ''Zeus IV'' explain that it is nowhere near the destination in which they would expect to be. Observing their location, Schultz sees another planet. Williams confirms this and says it seems to lie between Mars and Venus. Their state is also brought into confusion by the fact that the communication to Snowcap is weakened and their fuel is dropping much faster than normal.


===Episode 3===
Observing the crisis, the Doctor announces that he believes he knows the cause of the problems. He is not listened to but gives a piece of paper to Doctor [[Tom Barclay|Barclay]]. Snowcap sights the new planet before they receive the call from ''Zeus IV'' saying their fuel has reached 20% — Barclay says they should attempt to come down.
Apparently suffering from exhaustion, the Doctor collapses and is taken to the crew quarters to rest.
[[Image:Tenth_Planet_3_001.jpg|left|150px|thumb|[[Polly]] asks [[Barclay|Doctor Barclay]] for help]]
Cutler decides it is time to take the fight to the Cybermen, and contacts Geneva for permission to launch the powerful [[Z-bomb]] to destroy Mondas. Secretary Wigner at Geneva refuses permission, but Cutler decides to proceed anyway. Ben and Polly argue against using the bomb, Ben saying that the Doctor believed that Mondas would destroy itself anyway when it absorbs too much energy. The chief scientist at Snowcap, Doctor [[Barclay]], is also concerned, saying that the [[radiation]] caused by the exploding planet would cause great loss of life on Earth. Unswayed by the arguments and annoyed by the interruptions, Cutler orders Ben to be imprisoned with the Doctor.


Polly manages to persuade Dr. Barclay to help them stop the bomb being launched. Barclay tells Ben how to sabotage the rocket to prevent it from reaching Mondas, but Cutler notices Barclay's absence, and going to investigate, catches Ben while he is sabotaging the rocket, knocking him unconscious.
Schultz and Williams attempt to land, but they have no control over their descent as the new planet is affecting their gravitational pull.


A second Cyberman ship lands near Snowcap, but Cutler is prepared for them this time and the attacking Cybermen are repelled by the General's men using the stolen cyberweapons.  
Exasperated, Barclay goes to the Doctor for advice. The Doctor looks at a screen with the planet on it and observes that it is identical to Earth — down to the landmasses. The Doctor asks Barclay to look at the piece of paper that he had given him, and Barclay is astounded to read that the Doctor had predicted this phenomenon before they had even seen it. The Doctor tries to explain how he knew this, saying that millions of years ago there was a twin planet to Earth. Before he can go into any more detail, Cutler storms out, saying, "This is ridiculous." When alone, the Doctor explains to Ben that he fears this means invasion.


Meanwhile, the countdown to the launch of the Z-bomb has started. Ben regains consciousness but is disorientated and is unable to remember if he was able to successfully sabotage the rocket before being discovered by Cutler. The countdown approaches zero.
Cutler speaks to Mr [[Robert Wigner|Wigner]], the Secretary-General of International Space Command, and informs him of the new planet as well as the strangers. Wigner demands that they be interrogated immediately.


===Episode 4===
Cutler storms in and demands the truth from the Doctor; he suspects him of being involved in this mystery. He sends [[Tito]], the [[American sergeant (The Tenth Planet)|sergeant]] and [[Joe (The Tenth Planet)|Joe]] out to search the TARDIS.
[[Image:Tenth_Planet_4_001.jpg|right|150px|thumb|Ben deduces the Cybermen's weakness]]
As the countdown to launch the Z-bomb reaches zero, the engines fail on the launch pad. Cutler, enraged, threatens to kill Ben, Barclay, and the Doctor, who has now regained consciousness and returned to the tracking room. Driven mad with grief by the apparent death of his son in the ''[[Zeus V]]'' rescue capsule, Cutler is oblivious to the warnings that another force of Cybermen are attacking the base. As he is about to carry out his threat and kill the Doctor, Cutler is killed by the invading Cybermen. The Doctor is taken prisoner by the Cybermen. Earth's proximity to Mondas causes the twin planet's energy to drain, and Mondas begins to break apart. The Cybermen all collapse, their energy source destroyed. Ben rescues Polly and the Doctor. The weary Doctor returns to the TARDIS, and collapses to the floor. Ben and Polly watch as the Doctor's features begin to blur and transform into a [[Second Doctor|younger man]]


==Cast==
The three men scramble to the TARDIS. Before they can get out, a mysterious ship lands on the surface of the South Pole. Unable to open the TARDIS, the sergeant sends Tito and Joe back to get a welder. Whilst alone, he is approached by a robotic creature who kills him with a blow to the neck. When Tito and the other soldier return, the creature is disguised in the sergeant's clothes. When he turns to reveal himself, two more robotic creatures appear and kill the two soldiers with blows to the neck. The three creatures loom over their victims.
*[[First Doctor|The Doctor]] - [[William Hartnell]]
*[[Second Doctor|The Doctor]] - [[Patrick Troughton]] (uncredited at the end of Episode 4 only.)
*[[Ben Jackson]] - [[Michael Craze]]
*[[Polly]] - [[Anneke Wills]]
*General [[Cutler]] - [[Robert Beatty]]
*[[John Dyson|Dyson]] - [[Dudley Jones]]
*[[Barclay]] - [[David Dodimead]]
*[[Dan Schultz|Schultz]] - [[Alan White]]
*[[Glyn Williams|Williams]] - [[Earl Cameron]]
*[[Tito]] - [[Shane Shelton]]
*[[American Sergeant (The Tenth Planet)|American Sergeant]] - [[John Brandon]]
*[[Wigner]] - [[Steve Plytas]]
*Radar Technician - [[Christopher Matthews]]
*[[Krail]] &amp; [[Jarl]] - [[Reg Whitehead]]
*[[Talon]] &amp; [[Krang]] - [[Harry Brooks]]
*[[Shav]] &amp; [[Gern]] - [[Gregg Palmer]]
*Geneva Technician - [[Ellen Cullen]]
*TV Announcer - [[Glenn Beck]]
*Cyberman Voices - [[Roy Skelton]], [[Peter Hawkins]]
*R/T Technician - [[Christopher Dunham]]
*[[Terry Cutler]] - [[Callen Angelo]]


==Crew==
=== Episode 2 ===
*[[Assistant Floor Manager]] - [[Jenny McArthur]]
[[File:Tenth_Planet_2_001.jpg|right|thumb|The [[Cyberman (Mondas)|Mondas Cybermen]] invade the [[Snowcap]].]]
*[[Costumes]] - [[Sandra Reid]]
The Doctor reasserts his belief that there will be visitors to Earth from the mystery planet but is pooh-poohed by Cutler. Cutler speaks to ''Zeus IV'' and promises the pilots they will be brought back safely.
*[[Designer]] - [[Peter Kindred]]
*[[Make-Up]] - [[Gillian James]]
*[[Producer]] - [[Innes Lloyd]]
*[[Production Assistant]] - [[Edwina Verner]]
*[[Script Editor]] - [[Gerry Davis]]
*[[Special Sounds]] - [[Brian Hodgson]]
*[[Studio Lighting]] - [[Howard King]]
*[[Studio Sound]] - [[Adrian Bishop-Laggett]]
*[[Theme Arrangement]] - [[Delia Derbyshire]]
*[[Title Music]] - [[Ron Grainer]]


==References==
Outside Snowcap, the robots disguise themselves in the clothes of their now-dead victims.


===[[:Category:Foods and beverages|Foods and Beverages]]===
At International Space Command, a powerless Wigner is forced to watch the news to learn about the mystery planet as communications have been severed with Snowcap.
*Polly makes several cups of [[coffee]].


===[[:Category:Races and Species|Races and Species ]]===
While everyone is distracted by their efforts to land ''Zeus IV'' safely, the alien invaders enter the base, killing a soldier who tries to disable them on the orders of Cutler. The base personnel and Polly plead with the creatures to allow them to save the lives of the ''Zeus IV'' crew, but the aliens proclaim that the lives of the humans are irrelevant to them. They reveal that they are known as [[Cyberman|Cybermen]] and were once like human beings. They lived on the planet [[Mondas]], twinned with Earth. As Mondas drifted off into space, cybernetic scientists gradually replaced their bodies with mechanical parts and eliminated the "weaknesses" of illnesses and emotions from their brains. Cutler presses a panic button alerting International Space Control to an emergency. International Space Control gets in touch with Cutler, and the Cybermen order Cutler to inform them that it was a false alarm; Cutler refuses and is rendered unconscious by the touch of a Cyberman. Barclay is approached to do the same and refuses until the Cybermen threaten to destroy the computers that would help ''Zeus IV'' to land. Barclay yields, stating it as a fault. Once this has been done, the Cybermen inform Barclay it is impossible for the astronauts to return as Mondas' gravitational force is too close. As the Cybermen begin the process of securing Snowcap, Ben plans their escape. Seeing a gun left on the ground by the dead soldier, he picks it up but is soon spotted by a Cyberman. The gun is removed and bent in the Cyberman's grip, and Ben is removed and imprisoned in a projection room.
*[[Cybermen]] are what remains of Mondas' inhabitants.


===[[:Category:Planets|Planets]]===
The Cybermen allow the Snowcap personnel to contact ''Zeus IV'', but it is too late to save them. The ship is dragged further away from Earth by the new planet and explodes.
*[[Mondas]] is [[Earth]]'s twin planet.
*An Earth expedition has just returned from the [[Moon]].


===[[:Category:Locations|Locations]]===
The Cybermen demand information on Earth and explain that Mondas' energy reserves are becoming exhausted; they intend to use all of Earth's. It is currently absorbing energy from Earth and will soon destroy it. When Polly asks if they plan to kill all of humankind, the Cybermen reveal they propose to take all humans back to Mondas.
*International Space Command is based in [[Geneva]]
*[[Jodrell Bank]]
*[[Snowcap Space Tracking Station]]


===[[:Category:Organizations|Organisations]]===
Ben, who has been looking for a weapon, rigs up the projector to blind his [[Talon|Cyberman guard]]. He baits the Cyberman into the room. After the Cyberman is blinded, he steals the Cyberman's weapon and kills him. He seems to be affected by this death.
*Space flights are governed by a multinational body known as [[International Space Command]].
*[[International Television News]]


===[[:Category:Vehicles|Vehicles]]===
Ben sneaks back into the tracking room and hands the [[cyber-gun]] to the revived Cutler, who kills the remaining two Cybermen. Cutler contacts Secretary-General [[Wigner]] at [[Space Command HQ]] in [[Geneva]] and informs him of the attack. Wigner alerts all military bases and informs them that his son, [[Lieutenant]] [[Terry Cutler]], was sent on a mission to rescue the doomed ''Zeus IV'' and, in turn, is now trapped in orbit.
*[[Zeus V]] and [[Zeus IV]] are rocket-shaped spacecraft.


===[[:Category:Technology|Technology]]===
As Cutler makes plans to secure Snowcap from further Cyberman invasions, including the use of anti-aircraft missiles, the radar technician announces that a fleet of spacecraft have been detected. They are approaching Earth.
*[[Retinascope]]
*Nuclear [[Z-Bomb]]s can be launched via a [[Demeter rocket]].


===[[:Category:Biology|Biology]]===
=== Episode 3 ===
*[[Space Fatigue]]
Apparently suffering from exhaustion, the Doctor collapses and is taken to the crew quarters to rest. Cutler makes contact with ''Zeus V''.


==Story Notes==
[[File:Tenth_Planet_3_001.jpg|left|thumb|[[Polly Wright|Polly]] asks [[Barclay (The Tenth Planet)|Doctor Barclay]] for help.]]
* This is the first [[regeneration]] (though not called that) from William Hartnell's Doctor into [[Patrick Troughton]]'s Doctor.
Ben and Polly accompany the Doctor to his quarters. Ben checks his pulse and says he seems fine. Polly remarks that he seems "worn out".
* Episode 4 is missing from the BBC archives. The only known existing footage is the regeneration sequence, from a copy that was used on an entertainment news programme at the time to discuss the transition to the new Doctor.
*William Hartnell left Doctor Who due to bad health. Upon leaving, Hartnell himself said, "If there is one man in England, who can replace me as The Doctor, it's Patrick Troughton!" Troughton took over the role of the Doctor when Hartnell regenerated into Troughton. Hartnell returned to Doctor Who in [[The Three Doctors]] in 1973 to celebrate Doctor Who's 10th anniversery. Sadly, Hartnell died in 1975.
*The Doctor does not appear in Episode 3 as William Hartnell was unwell during the week when it was recorded.
*Special 'computer tape'-style opening and closing title graphics were created for this story by graphic designer [[Bernard Lodge]].
*This is the only story to give Cybermen characters individual names (Krang, Jarl, ect). After this, Cybermen were only ever named by rank (Cyberleader, Cybercontroller, ect).
*At the time of the serial's original broadcast, as well as the timeframe of the serial (1986), [[Pluto]] was still considered a planet and therefore the story title and dialogue referring to Mondas as the solar system's tenth planet was correct. In 2006, however, Pluto lost its planetary status, which would make Mondas officially the ninth planet, not the tenth. ''Note: By the newly-adopted criteria which excludes Pluto however, Mondas would technically not be considered a planet either.''


===Ratings===
Cutler decides it is time to take the fight to the Cybermen. He intends on destroying Mondas with a Z-bomb — a series of nuclear bombs that are placed at strategic points around the world. He rings the International Space Centre. Secretary Wigner at Geneva refuses permission, but Cutler rephrases his question asking if he can do anything he deems suitable in order to destroy the Cybermen. Wigner agrees to this, and Cutler takes this as permission to use the bomb. Ben and Polly argue against using the bomb. Ben says the Doctor believed that Mondas will destroy itself anyway when it absorbs too much energy. Cutler does not appreciate this intervention and confines Ben to the same quarters in which the Doctor is resting. Before he leaves, he implores Polly to try to convince Barclay to call off the attack.
* Episode 1 - 5.5 million viewers
 
* Episode 2 - 6.4 million viewers
When Ben arrives at the quarters, he tries to rouse the Doctor, to no avail. However, he soon finds a vent that he begins to loosen with his penknife.
* Episode 3 - 7.6 million viewers
 
* Episode 4 - 7.5 million viewers
Dyson and Cutler fuse the bomb. Cutler admits he is scared by what he is about to do but feels that he has no choice. When he returns to the control centre, he is concerned to hear that they have lost contact with ''Zeus V''. Polly talks to Barclay, who admits he is reluctant to launch the bomb, citing the [[radiation]] caused by the exploding planet which would cause great loss of life on Earth. Polly suggests they rig the bomb so that it doesn't explode. Their plans are interrupted by Cutler, who explains they are to wait for the Cybermen to land, and then they will destroy them with their own weapons. Barclay and Polly sneak away to find Ben. Barclay explains that he would need to go through the vent to reach the bomb and tells Ben how to sabotage the rocket to prevent it from reaching Mondas. As Ben leaves, the alarm to signal the arrival of the Cybermen sounds.
 
The Cybermen land and are immediately mowed down by the hidden soldiers wielding the Cybermen's weapons. The soldiers collect the incapacitated Cybermen's weapons for the next assault.
 
Ben has reached the bomb and begins the process of disarming it but, at the control centre, Cutler notices Barclay's absence. He goes to investigate, catches Ben while he is sabotaging the rocket and knocks him unconscious. Cutler suspects Barclay of being part of this mutiny but states he needs him for the launch of the rocket.
 
Later, Barclay starts the countdown to the launch of the Z-bomb. Ben regains consciousness but is disorientated and cannot remember if he sabotaged the rocket before being discovered by Cutler. The countdown approaches zero.
 
=== Episode 4 ===
As the countdown to launch the Z-bomb reaches zero, the engines fail on the launch pad. Cutler is enraged. He threatens to kill Ben, Barclay and the Doctor, who has regained consciousness and returned to the tracking room. Driven mad with grief by the apparent death of his son in the ''[[Zeus V]]'' rescue capsule, Cutler is oblivious to the warnings that another force of Cybermen are attacking the base. He also ignores the Doctor's protestations that Mondas is on the verge of burning up.
 
As he is about to carry out his threat and kill the Doctor, Cutler is killed by the invading Cybermen. The Doctor tries to mediate with the Cybermen, offering them a home on Earth to replace their broken up planet. The Cybermen say they will not even think about negotiations with a missile pointed at their planet and demand that it be removed before they begin negotiations. As a makeweight, they take Polly as a prisoner onto their ship.
 
As soon as they arrive at their ship, the Cybermen render Polly unconscious and place her in a large metal chair.
 
The Doctor takes charge of the control centre and contacts the International Space Centre, who themselves have been taken over by Cybermen, to tell them of the situation. The Cyberman in Geneva contacts the Cyberman at Snowcap and informs him that they must move to their secondary objective, which the Doctor assumes to be the destruction of Earth. The Doctor goes on the loud speaker system and warns all of Snowcap of this.
 
Down in the pit of the Z-bomb, Ben, Barclay, [[Haines (The Tenth Planet)|Haines]] and Dyson are disarming the bomb. Ben raises the question as to why the Cybermen are not doing this themselves, what with them being naturally stronger. Ben hypothesises that they are intolerant to the radiation in the bomb. Dyson, Haines, Barclay and Ben put this to the test by playing dead and drawing in the Cyberman guard from outside, who immediately is rendered immobile. Ben uses this knowledge to order the return of Polly; however, the Cybermen refuse to relent. The Doctor is now taken to the Cybership. The Cybermen warn Ben that both he and Polly will be killed unless they give up the bomb. Ben looks around for something in the room that is portable and radioactive that they can use to their advantage. With the help of Barclay and Dyson, he uncouples something from the back of one of the computers he can use for this purpose. They hide behind the door as the Cybermen approach. The Cybermen attempt to gas the four men out. When Ben and the rest cannot take any more, they open the door and use a combination of the deactivated Cyberman's gun and the radioactive equipment to deactivate the Cybermen. However, Haines is killed.
 
On returning to the control base of Snowcap, Barclay shows Ben a device that the Cybermen used to contact each other. Ben uses it randomly to draw the Cybermen in. Whilst they wait, the lights dim as Mondas draws yet more power from Earth. As the Cybermen approach, one of the scientists points to the screen where they see Mondas flash brightly and melt. The Cybermen that were approaching the humans disintegrate as the power source they had drawn from has been lost. ''Zeus V'' returns onscreen; its pilot explains that all power has been restored and he can attempt re-entry.
 
Ben runs out to the Cybership to free Polly and a semi-conscious Doctor. The Doctor seems to deliberate as to whether "it's all over" before settling that it's "far from being all over" and alerting his companions that he must return to the TARDIS immediately. Ben gives him his cloak so he won't "catch his death of cold", but the Doctor gives him an unusually distant reply, concerned with something more important at hand. He says, "Ah, yes. Thank you. It's good. Keep warm," in a very abbreviated way, without a lick of humour to be found. Bearing little attention to Ben or Polly, he even deserts them, rushing off alone.
 
[[File:First_Doctor_regenrates.jpg|left|thumb|An amazing transformation begins...]]
The weary Doctor returns to the TARDIS and closes the door, trying to take care of a dire situation by himself — his body has worn too thin and he is dying from old age, but very soon, that problem will be resolved. He wants his companions safely away from him when a particular event happens, but they are protesting for him to let them inside anyway. As Ben and Polly hammer on the door, the controls operate of their own accord and the central column begins to rise and fall. The Doctor seizes enough energy to open the door, and Ben and Polly finally get in. Barely conscious, the Doctor collapses to the floor. Ben and Polly stand back as the Doctor becomes [[Regeneration|enveloped in a bright light]]. After the light dies down, the Doctor's face is different and has the appearance of a [[Second Doctor|younger, dark-haired man]]...
 
== Cast ==
* [[First Doctor|Dr. Who]] - [[William Hartnell]]
* [[Polly Wright|Polly]] - [[Anneke Wills]]
* [[Ben Jackson|Ben]] - [[Michael Craze]]
* [[Cutler (The Tenth Planet)|General Cutler]] - [[Robert Beatty]]
* [[Glyn Williams|Williams]] - [[Earl Cameron]]
* [[John Dyson|Dyson]] - [[Dudley Jones]]
* [[Tom Barclay|Barclay]] - [[David Dodimead]]
* [[Dan Schultz|Schultz]] - [[Alan White]]
* [[Tito]] - [[Shane Shelton]]
* [[American sergeant (The Tenth Planet)|American Sergeant]] - [[John Brandon]]
* [[Robert Wigner|Wigner]] - [[Steve Plytas]]
* [[Radar technician (The Tenth Planet)|Radar Technician]] - [[Christopher Matthews]]
* [[Krail]] - [[Reg Whitehead]]
* [[Talon]] - [[Harry Brooks]]
* [[Shav]] - [[Gregg Palmer]]
* [[Geneva technician|Geneva Technician]] - [[Ellen Cullen]]
* [[Television announcer (The Tenth Planet)|TV Announcer]] - [[Glenn Beck]]
* Cyberman Voices - [[Roy Skelton]], [[Peter Hawkins]]
* [[Burns (The Tenth Planet)|R/T Technician]] - [[Christopher Dunham]]
* [[Terry Cutler]] - [[Callen Angelo]]
* [[Regos Krang|Krang]] - [[Harry Brooks]]
* [[Jarl]] - [[Reg Whitehead]]
* [[Gern]] - [[Gregg Palmer]]
 
=== Uncredited cast ===
* [[Second Doctor|Dr. Who]] - [[Patrick Troughton]]
* [[Haines (The Tenth Planet)|Haines]] - [[Freddie Eldrett]]
* [[Soldier 1 (The Tenth Planet)|Soldier in Tracking Room]] - [[Ken McGarvie]]
* Soldiers - [[Terence Jones]], [[Roy Pearce]], Freddie Eldrett, [[Nick Hilton]], [[Peter Pocock]]
* Second Engineer - Roy Pearce
* Countdown voice - [[Roy Skelton]]
* Snowcap voices - Roy Skelton, [[Glenn Beck]]
* Double for Ben - Peter Pocock
* Double for Dr. Who - [[Gordon Craig]]
* Cybermen - [[Bruce Wells]], [[John Knott]], [[John Haines]]
* Tracking room technicians - [[Richard Lawrence]], [[Morris Quick]], [[Bill Gosling]], [[Gordon Lang]]
* R/T technician - [[Nicholas Edwards]]
* Corporal - [[Alec Coleman]]
* Coloured High Ranking Officer - [[Chris Konyils]]
* Geneva Secretary - [[Sheila Knight]]
* Spanish High Ranking Officer - [[Stanley Davies]] (all [[DWM 214]])
 
== Crew ==
* [[Assistant Floor Manager]] - [[Jenny McArthur]]
* [[Costumes]] - [[Sandra Reid]]
* [[Designer (crew)|Designer]] - [[Peter Kindred]]
* [[Make-Up]] - [[Gillian James]]
* [[Producer]] - [[Innes Lloyd]]
* [[Production Assistant]] - [[Edwina Verner]]
* [[Script Editor]] - [[Gerry Davis]]
* [[Special Sounds]] - [[Brian Hodgson]]
* [[Studio Lighting]] - [[Howard King]]
* [[Studio Sound]] - [[Adrian Bishop-Laggett]]
* [[Theme Arrangement]] - [[Delia Derbyshire]]
* [[Doctor Who theme|Title Music]] - [[Ron Grainer]]
 
=== Uncredited Crew ===
* [[Vision mixer]] - [[Shirley Coward]]{{Fact}}
 
=== Animation Unit ===
* Inbetweeners
** [[Yvonne Wilcox]]
** [[Jenna Batcheldor]]
** [[Konstara Prawiro]]
** [[Heather Sillince]]
** [[Morgan Tate]]
* Additional Compositing and Colour Grading - [[Thaumatury]]
* Compositor and Grader - [[David Devjak]]
* Compositors
** [[Conor Bowes]]
** [[Sean Mundy]]
** [[Chris P. Chapman]]
* CGI Set Reconstructions - [[Aaron J. Climas]]
* Junior Animators
** [[Jake Opperman]]
** [[Crystal Chappell]]
** [[Avalon Eyres]]
* Editor - [[Josh Campbell]]
* Lead Animator Backgrounds - [[Paul Johnson (Animator)|Paul Johnson]]
* Lead Animators
** [[Sean Zwan]]
** [[Colin Bennett]]
** [[Zhe Xiang Tang]]
** Chris P. Chapman
* Audio Restoration and Mastering - [[Mark Ayres]]
* Thanks to
** [[Graham Strong]]
** [[David Holman]]
* Assistant Producer - [[David Breen]]
* Assistant Director - Sean Zwan
* Producer - [[Stephanie Youlten]]
* Director/Producer - [[Austen Atkinson]]
* Executive Producer for [[Big Finish Productions|Big Finish]] - [[Jason Haigh-Ellery]]
* Executive Producer - [[Dan Hall]]
A [[Planet 55]] Production for [[Pup Ltd]]
 
== Worldbuilding ==
=== Biology ===
* [[Space fatigue]] is hypothesised as the cause of the ''[[Zeus IV]]'' pilots' tiredness, influenced by Mondas' gravity.


===Myths===
=== Foods and beverages ===
*An attempt was once made to colourise parts of this story. ''(This was an April Fool's joke in [[Doctor Who Magazine]].)''
* Polly makes several cups of [[coffee]].
*The master copy of the fourth episode of this story was lost in 1973 after being lent out to the BBC's children's magazine programme Blue Peter for use in a feature that they were compiling about the series. ''(It is unknown how this episode came to be lost; the episode that was lost after being lent out to Blue Peter was actually The Daleks' Master Plan: The Traitors.)''


===Filming Locations===
=== Locations ===
*[[Ealing Television Film Studios]]
* Polly is amazed by the stock of clothes in the TARDIS's wardrobe and she jokingly wonders if the Doctor went shopping in [[Carnaby Street]].
* The [[observatory|observatories]] of [[Jodrell Bank Observatory|Jodrell Bank]] and [[Mount Palomar Observatory|Mount Palomar]] are said to confirm the appearance of Mondas in the sky.
* Terry Cutler leaves Earth from the [[Woomera cosmodrome]].


===Discontinuity, Plot Holes, Errors===
=== Individuals ===
* The eyes of the actors playing the Cybermen can be clearly seen through the eye holes. ''The Cybermen were like us, they are just in their cybernetic early stages'' .
* Ben calls Polly "[[Nanook of the North]]" because of her fur coat.
* As with other early ''Doctor Who'' serials set in "the future", technology and human advancement displayed in this episode, set in 1986, does not coincide with real-world development by that time, even as shown in contemporary stories such as ''[[Attack of the Cybermen]]'', and certainly not in later revival series episodes. ''However, there is repeated precedent involving [[UNIT]], [[Torchwood Institute]], etc. to suggest that the general public was not always aware of the level of technology available on "current-day" earth.''
* [[Philips (The Tenth Planet)|Philips]] is stationed at the base.
*A Mondas Day appears to only be a few Earth seconds. ''Why shouldn't it be? This could be the result of whatever cosmic force caused it to be pulled out of our solar system all those years ago, and now ultimately returned to it. But the spin speed shown would instantly destroy any Earth-like planet, as the centrifugal force would exceed its gravitational pull. Presumably, the view of Mondas shown was intended to be deliberately speeded up by the Snowcap systems, perhaps to show more clearly the way it was moving''.
=== Media ===
* ''[[International Television News]]'' is the television channel which announces the appearance of Mondas.


*The writing credit for episode one has Kit Pedler as 'Kitt Pedler' and title music is credited to 'Byron Grainer'; for episode 3, Gerry Davis becomes 'Gerry Davies'.
=== Organisations ===
* Space flights are governed by a multinational body known as [[International Space Command]].


*Sometimes the Cybermen start to talk before their mouths open. ''They're cyborgs, and their voices don't sound like anything conceivably produced by human, or even any kind of animal vocal chords. It's possible the mouths open and close independent of speech, kind of like a Teddy Ruxpin.''
=== Popular culture ===
* Tito sings an excerpt of the song ''[[La donna è mobile]]''.
* When the Doctor announces a visitor, Ben jokes about being visited by [[Father Christmas]].


*In episode one when one of the Cybermen is shot his 'ears' flap about. ''Why shouldn't they? If he still has his human ears and he has been injured, they may well come loose.''
=== Planets ===
* An Earth expedition has just returned from [[the Moon]].


*The script requires the Cybermen to pass for human in their parkas, an effect ruined by the lamps on their heads.
=== Technology ===
* A [[retinascope]] is part of the rocket.
* Nuclear [[Z-Bomb]]s, able to destroy a planet or turn it into a star, can be launched via a [[Demeter rocket]].
* According to Ben, [[lock]]s are different than the 1966 ones, so he cannot force them.


*Barclay says that he designed some of the base, and that he couldn't fit into the ventilation shaft, but it is broad enough to accommodate Geoff Capes.  ''It is possible that an unseen portion of the shaft was narrower than that which is shown''.
=== Influences ===


*How can Earth and Mondas have identically shaped land masses, as each planet has been separately affected by continental drift for millions of years? ''Does anyone explicitly state that the continents have moved differently from each other?''
* ''[[The Thing from Another World]] -'' the polar setting.


*It is always seen snowing in Antarctica. In fact, due to its high altitude, the Antarctic air is very dry and precipitation is rare. ''Although precipitation is relatively rare in Antarctica, it does vary significantly depending upon where in Antarctica you are. It is also not unusual to have white-out conditions, which can resemble snowing.''
== Story notes ==
* This is the first time the [[regeneration]] process is seen. The process is not given a name until ''[[Planet of the Spiders (TV story)|Planet of the Spiders]]'' in 1974.
* Only episodes one, two and three of this four-part story exist in the [[BBC Archives]] as [[Telerecording|16mm black & white film telerecordings]]. Only short clips of footage from the missing episode four exist, among which are the regeneration sequence itself; the sequence exists thanks to it having been included in an early 1970s edition of ''[[Blue Peter]]'' that discussed the transition to the new Doctor. The regeneration is one of several sequences from lost episodes ([[Katarina]]'s death in ''[[The Daleks' Master Plan (TV story)|The Daleks' Master Plan]]'' being another) that were inadvertently preserved through their use on ''Blue Peter'' episodes that were not wiped.
* [[William Hartnell]] left ''Doctor Who'' due to bad health, but upon leaving had said, "If there is one man in England who can replace me as the Doctor, it's [[Patrick Troughton]]!" Troughton took over the role of the Doctor when Hartnell regenerated into Troughton. Hartnell returned in ''[[The Three Doctors (TV story)|The Three Doctors]]'' in 1972 to celebrate the show's tenth anniversary, but because of his poor health he was unable to appear live alongside his successors, [[Jon Pertwee]] and Patrick Troughton — instead appearing only in pre-recorded sequences shown on video screens. He died three years later.
* [[William Hartnell]] did not appear in episode three as he had been taken ill. On the Monday before the programme was due to be recorded, he sent a telegram to the production team informing them that he was too unwell to work. [[Gerry Davis]] rewrote the script to explain the Doctor's absence (his sudden collapse) and gave his dialogue to other characters, most noticeably Ben. This was not as much of an interruption to the episode's production as it would seem, as all four episodes had been written so that Hartnell would have relatively little to do in case of just such an event. The original draft of episode four did not feature the Doctor regenerating at the end. This has led to the sad irony of the last surviving episode of William Hartnell's era not featuring Hartnell himself.
* Special "computer tape"-style opening and closing title graphics were created for this story by graphic designer [[Bernard Lodge]].
* This is the only TV story to give Cybermen characters individual names (Krang, Jarl etc). After this, Cybermen were only ever named by rank (Cyber Leader, Cyber Controller etc).
* This is the first time that the second broadcast story of a season did not feature the [[Dalek]]s.
* At the time of the serial's original broadcast, as well as the timeframe of the serial (1986), [[Pluto]] was still considered a planet and therefore the story title and dialogue referring to Mondas as the solar system's tenth planet was correct. A later story, ''[[The Sun Makers (TV story)|The Sun Makers]]'', set on Pluto, will suggest it regains planetary status at some point in the future.
* The First Doctor's last words were originally scripted as something similar to "No... no, I simply will not give in!" Time was running short towards the end of production, and [[Derek Martinus]] opted not to record the line, wanting to ensure that the regeneration sequence was recorded as well as possible. As a result, the First Doctor's last words were simply, "Ah! Yes. Thank you. That's good, keep warm." In ''[[Twice Upon a Time (TV story)|Twice Upon a Time]]'', the Doctor's final words are given as "Well then, here we go, the long way round."
* In the original script, the Cybermen had human faces (albeit all rather similar), with a metal plate under their hair. Their hands were also to be human, although their arms would be transparent, made up of rods and lights. A movable arm was also to extend from each Cyberman's chest unit, but such an accessory was considered too costly to implement.
* Williams was originally [[Welsh]]. [[Derek Martinus]] cast Bermudan actor [[Earl Cameron]] in the role, deciding that he could be black ''and'' Welsh.
* [[Michael Craze]] found this work difficult, as he had just undergone surgery to remove a bone chip from his nose (during which he suffered a burst blood vessel which nearly cost him his life) and the jabolite "snow" blown around the film stage irritated his nose badly. Nonetheless, Craze was undeterred from asking out production assistant [[Edwina Verner]], whose job it was to throw the jabolite into the wind machine — and the two would subsequently marry.
* The Doctor shows some understanding of the Cybermen, although the precise extent of his knowledge is not made clear. A few future stories in spin-off media use this as an opportunity to imply that he has met or heard of the Cybermen before:
** In ''[[The Alchemists (audio story)|The Alchemists]]'', [[Susan Foreman|Susan]] states in a letter intended for [[Barbara Wright|Barbara]] that [[gold]], a weakness of the Cybermen established in ''[[Revenge of the Cybermen (TV story)|Revenge of the Cybermen]]'', is useful for fighting "certain things".
** In ''[[Byzantium! (novel)|Byzantium!]]'', in which he is still travelling with [[Ian Chesterton|Ian]], Barbara and [[Vicki Pallister|Vicki]], the Doctor remembers a visit to Mondas.
** In ''[[The Empire of Glass (novel)|The Empire of Glass]]'', the First Doctor chairs the [[Armageddon Convention]] which, although the Cybermen do not attend, outlawed the use of [[Cyber-bomb]]s according to ''Revenge of the Cybermen''.
** In ''[[Salvation (novel)|Salvation]]'', [[Steven Taylor|Steven]] thinks of the Cybermen when thinking of evil beings, although this could also be from his pre-[[companion]] years as a fighter pilot.
** The First Doctor and Susan ''do'' encounter the Cybermen in ''[[Prologue: The First Doctor (comic story)|Prologue: The First Doctor]]'', a teaser comic strip for ''[[Supremacy of the Cybermen (comic story)|Supremacy of the Cybermen]]''. However, this event takes place in an [[alternate timeline]] of ''[[An Unearthly Child (TV story)|An Unearthly Child]]'' which is ultimately undone.
** The Doctor and Susan encounter Cybermen in ''[[Dr. First (novel)|Dr. First]]'', clearly stating that the Doctor had had numerous encounters with the species before the story.
** The [[Twice Upon a Time (novelisation)|novelisation of ''Twice Upon a Time'']] states that the Doctor knew of the history of the Cyberman invasion before the events of this story, so he deliberately acts as a passive observer while the historical events play out, although he stays ready to intervene if necessary.
* The missing episode four, animated in 2013, begins a run of seven animated reconstructions through to the end of [[TV]]: ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'', which was released in animated form three years later. This was the longest consecutive run of animated reconstructions produced by the BBC until 2019 when it was announced that [[TV]]: ''[[The Faceless Ones (TV story)|The Faceless Ones]]'' would be receiving an animated reconstruction.
* With the UHD Blu-ray release of [[TV]]: ''[[Twice Upon a Time (TV story)|Twice Upon a Time]]'' in September 2018, ''The Tenth Planet'' has become the first and, to date, only classic-era serial to see footage upscaled to 4K resolution.
* Episode four of this story begins a run of twelve [[missing episode]]s that concludes with episode one of ''[[The Underwater Menace (TV story)|The Underwater Menace]]''. As of 2020, this is the longest run of missing episodes. Additionally, [[Season 4 (Doctor Who 1963)|Season 4]], of which this story is a part, currently has no complete serials, and this story is the only one in the season to be missing only a single episode.
* [[Anneke Wills]] recalled that the Cybermen had her in stitches because they looked so cheap, but the actors were all "six foot hunks".
* [[Michael Craze]] initially didn't think much of the Cybermen, recalling that they were held together by sellotape.
* The regeneration scene took a whole day to film.
* Stock footage of a {{w|Blue Streak (missile)|Blue Streak}} missile test was used for the launch of the [[Zeus IV]] spacecraft.
* When Graham Strong lent his audio recordings of all four episodes to the [[Doctor Who Restoration Team]] in the 1990s, certain parts of the tapes were revealed to have a higher soundtrack quality than the three surviving episodes themselves.
* The Cybermen actors were so hot in their costumes under the studio lights that some of them fainted.
* The story originally ended with the Doctor, Polly and Ben simply leaving in the TARDIS, to the bewilderment of Barclay and Dyson.
* The regeneration scene would have originally simply seen [[William Hartnell]] collapse on the floor of the TARDIS console room with his cloak covering his face; in the first episode of ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'', the cloak would have been pulled back to reveal [[Patrick Troughton]] instead.
* The story depicts an American spaceship being lost with all hands in the year 1986. By a spooky coincidence, in the real-world year of 1986, the United States actually would lose one of their spacecraft with all hands via [https://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disaster the mid-takeoff explosion of the Space Shuttle ''Challenger''].
* The part of Dyson was first offered to [https://en.wikipedia.org/wiki/Bernard_Hepton Bernard Hepton], but the production team had to reluctantly withdraw the offer because rewriting had made the role too nondescript for an actor of his stature.
* [[Anneke Wills]] later claimed that [[William Hartnell]] was racist and objected to [[Earl Cameron]]'s casting. She said that she and [[Michael Craze]] were ashamed of his attitude.
* [[Kit Pedler]]'s wife came up with the serial's title.
* Soon after starting work on the script, [[Kit Pedler]] became seriously ill with ulcerative colitis, which required surgery and an extended stay in hospital. Having already contributed to the development of the storyline, [[Gerry Davis]] agreed to assist in the scripting duties as well. Davis would be credited as the co-author of the final two episodes, and copyright on the Cybermen would be split equally between the writers. As it turned out, Davis basically wrote the first draft of each script, concentrating on the action elements, then Pedler wrote a second draft, filling in more scientific details. The pair cooperatively completed a third and final draft.
* Once filming was completed, the cast and crew retired to a farewell party in [[William Hartnell]]'s honour at [[Innes Lloyd]]'s home.
* Both [[Gerry Davis]] and [[Innes Lloyd]] liked the space capsule idea, since both the US and the USSR were in the middle of the space race at the time.
* [[Malcolm Hulke]] had previously pitched an idea about Earth having a twin planet for [[Season 1 (Doctor Who 1963)|Season 1]] called ''[[The Hidden Planet (unproduced TV story)|The Hidden Planet]].''


*The Cybermen's helmets were held together with Sellotape, which can clearly be seen in this episode.  
=== Ratings ===
* Episode 1 - 5.5 million viewers
* Episode 2 - 6.4 million viewers
* Episode 3 - 7.6 million viewers
* Episode 4 - 7.5 million viewers


*Obviously, the writers haven't decided yet how many hearts the Doctor has. Polly checks his pulse and finds it normal. ''It's mentioned in [[Goth Opera ]]that Time Lords grow their second heart after their first Regenaration.''
=== Myths ===
* An attempt was once made to colourise parts of this story. ''(This was an [[April Fools' Day|April Fools' joke]] in [[Doctor Who Magazine]].)''
* A test regeneration was filmed during production of ''[[The Smugglers (TV story)|The Smugglers]]''. ''(This too was an [[April Fools' Day|April Fools' joke]] in [[Doctor Who Magazine]].)''
* The master copy of episode four was lost in 1973 after being lent to the BBC's children's magazine programme ''Blue Peter'' for a feature they were compiling about the series. ''(It is unknown how this episode came to be lost; the episode that was lost after being lent out to ''Blue Peter'' was ''"[[The Traitors (episode)|The Traitors]]"'', the fourth episode of [[The Daleks' Master Plan (TV story)|The Daleks' Master Plan]].)''
* Home video releases use Graham Strong's audio tapes for episodes one, two and three instead of the soundtracks from the actual surviving prints. ''(This has never been confirmed.)''


*When the Cybermen are ambushed outside, one of them has part of his headpiece(one of the "jug handles") come loose. ''He has just been shot with a powerful energy weapon that would likely cause all kinds of such damage.''
=== Filming locations ===
* [[Ealing Television Film Studios]]


*The dialogue between Cutler and the technician at the beginning of Episode 3 is slightly different from that which closed Episode 2.  
=== Production errors ===
{{discontinuity}}
* Sometimes the Cybermen start to talk before their mouths open.
* The Cyberman helmets were held together with Gaffatape, which can clearly be seen in this episode.
* When the Cybermen are ambushed outside, one of them has part of his headpiece (one of the "jug handles") come loose.
* On two occasions, Robert Beatty fluffs his lines, as a result of which [[Cutler (The Tenth Planet)|Cutler]] mistakenly refers to [[Wigner]] as "General-Secretary" instead of "Secretary-General", as well referring to Dyson as "Barclay" while overseeing the arming of the Z-bomb.
* The reprise at the start of episode three is a remount of episode two's cliffhanger, not a telerecording of the final moments of episode two, and the dialogue between Cutler and the technician at the beginning of episode three is slightly different from that which closed episode two.
* In episode four, [[Michael Craze]] commits a {{w|Spoonerism}}. He accidentally says "pl'''o'''net M'''a'''nd'''o'''s" instead of "planet Mondas."
* In episode two, while [[Krail]] is proposing his plan to take the humans to Mondas (and after the Doctor has shouted his objections), his head-mounted lamp / "third eye" starts reflecting studio lights.
* At the beginning of episode two, when the Cyberman looks past the camera, the wall showing the Antarctic behind him briefly cuts off, showing the studio.
* In the opening credits of episode one, Kit Pedler's name is misspelled as Kitt Pedler
* Similarly, in the opening credits of episode three, Gerry Davis' name is misspelled as Gerry Davies.


*How did the Doctor know about General Cutler's plan to launch the Z-bomb? Cutler decides to do this in Episode 3 but the Doctor was lying down ill in another room throughout the episode – but he walks into the Tracking Room and says "Your plan is foiled sir!" ''He obviously overheard the plan while laying there. Also, throughout this story, the Doctor has some information about what is going on - particularly, the fact that the Cybermen will appear. Presumably he gets this from the same source as his inforrmation about the Aztecs, the French Revolution etc - ie. from history files. The Z-Bomb plan could have been mentioned in those same sources. It would be an important element in Earth's history - especially if, without the Doctor, Ben and Polly's intervention, it was detonated.''
== Continuity ==
* The specific design of the Cybermen featured in this story would be seen in many adventures.
** Mondas' origins prior to this story are explored in [[AUDIO]]: ''[[Spare Parts (audio story)|Spare Parts]]''.
** The [[Eighth Doctor]] later encountered these rudimentary Cyberman variants in [[Vienna]] on [[11 September]] [[1873]]. ([[AUDIO]]: ''[[The Silver Turk (audio story)|The Silver Turk]]'')
** The [[Twelfth Doctor]] and his companions later witnessed the inception of a version of these prototypical Cybermen, which he recognises on sight as a "Mondasian Cyberman", on a Mondasian colony ship that had been trapped in the grasp of a [[black hole]]. ([[TV]]: ''[[World Enough and Time (TV story)|World Enough and Time]]'') In this case, the Doctor would call the [[Genesis of the Cybermen]] as an example of parallel evolution occurring in many places in space and time. ([[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'')
* The Doctor claims his body is "wearing a bit thin". This phrase is echoed by his [[war incarnation]] before he regenerates. ([[TV]]: ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]'')
* The Cybermen would later attempt to gain access to [[time travel]], hoping to destroy Earth in [[1985]], thus preventing the destruction of Mondas. However, their efforts were thwarted by the [[Sixth Doctor]] and [[Peri Brown]]. ([[TV]]: ''[[Attack of the Cybermen (TV story)|Attack of the Cybermen]]'')
* The Doctor would later return to Antarctica in the [[1970s]] during his [[fourth incarnation]] ([[TV]]: ''[[The Seeds of Doom (TV story)|The Seeds of Doom]]'') and, during his [[seventh incarnation]], in [[2006]], ([[PROSE]]: ''[[Iceberg (novel)|Iceberg]]'') [[2012]] ([[AUDIO]]: ''[[Frozen Time (audio story)|Frozen Time]]'') and [[2045]]. ([[AUDIO]]: ''[[The Word Lord (audio story)|The Word Lord]]'') The [[Twelfth Doctor]] would return to Antarctica at the same time as the First Doctor when he was also on the verge of regenerating. ([[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'', ''[[Twice Upon a Time (TV story)|Twice Upon a Time]]'')
* Twenty years after they helped the Doctor prevent the return of Mondas in their personal timelines, Ben and Polly — who had gone their separate ways in life following their return to Earth on [[20 July]] [[1966]] — reunited on [[31 December]] [[1986]], which was by then their present. Ben believed that numerous governments may have covered up the return of Mondas and the Cyberman invasion of the Snowcap. Even after twenty years, Ben still had nightmares about the Cyberman in the projector room. ([[PROSE]]: ''[[Mondas Passing (short story)|Mondas Passing]]'')
* In the aftermath of the attempted Cyberman invasion, [[Allison Williams|Professor Allison Williams]] led the scientific team which examined their ship. ([[PROSE]]: ''[[The Power of the Daleks (novelisation)|The Power of the Daleks]]'')
* Unbeknownst to the Doctor, his regeneration into his second incarnation was witnessed by his deceased companion [[Oliver Harper]], who was killed by the [[Vardan]]s on [[Grace Alone]] but remained as a ghost in the TARDIS. ([[AUDIO]]: ''[[The First Wave (audio story)|The First Wave]]'')
* Earth would again be threatened by the approach of a planet in or around the [[2000s]],{{note|Both ''[[Planet of the Dead (TV story)|Planet of the Dead]]'' and ''[[The End of Time (TV story)|The End of Time]]'' are referred to in dialogue as taking place after the end of ''[[Journey's End (TV story)|Journey's End]]'', which is set in either [[2008]], according to [[TV]]: ''[[The Fires of Pompeii (TV story)|The Fires of Pompeii]]'', [[TV]]: ''[[The Waters of Mars (TV story)|The Waters of Mars]]'', and [[AUDIO]]: ''[[SOS (audio story)|SOS]]'', or six weeks after the middle of [[May]] [[2009]], circa [[June]], according to [[PROSE]]: ''[[Beautiful Chaos (novel)|Beautiful Chaos]]''. However, the year of ''The End of Time'' is unspecified, as is whether or not it is intended to be the [[Christmas]] immediately after ''Journey's End''.}} in that case [[Gallifrey]]. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* After departing Ben and Polly, the Doctor resisted his [[regeneration]] out of fear, ultimately meeting [[Twelfth Doctor|a future incarnation]] that was also resisting regeneration. Following an adventure with his future self, the Doctor returned to Antarctica where he was found by Ben and Polly before regenerating. ([[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'', ''[[Twice Upon a Time (TV story)|Twice Upon a Time]]'')


==Continuity==
== Home video and audio releases ==
*Mondas' origins prior to this story are explored in [[BFA]]: ''[[Spare Parts]]''.
=== Digital releases ===
*The Cybermen attempt to travel back in time and save Mondas in [[DW]]: ''[[Attack of the Cybermen]]''.
Until 31 October 2017, this story was available in [[BBC Store]] ([[UK]]). The fourth episode was represented as an animated reconstruction with original soundtrack.


==Timeline==
=== DVD, VHS and audio releases ===
*This story occurs after [[The Feast of Seven... Eight (and Nine)]]
* This was released on VHS video in 2000 in a box set with ''[[Attack of the Cybermen (TV story)|Attack of the Cybermen]]'', with a reconstruction of the missing episode four. A release was originally planned in 1993 with a cover commissioned and drawn by [[Andrew Skilleter]], but this was cancelled.<ref>Skilleter, A., ''Blacklight'', p30. ISBN 9781852274153.</ref>
*This story occurs before [[The Power of the Daleks]]
* Editing and reconstruction for release was completed by the [[Doctor Who Restoration Team]].
* The soundtrack to this story, with linking narration by [[Anneke Wills]], was first released on [[1 November (releases)|1 November]] 2004, as part of a metal box set titled ''[[Doctor Who: Cybermen (CD collection)|Doctor Who: Cybermen]]''. It was re-released as a single CD on [[9 January (releases)|9 January]] 2006, and again as part of the box set ''[[Doctor Who: The Lost TV Episodes - Collection Three]]'' on [[4 August (releases)|4 August]] 2011.
* It was released on DVD for the first time in the ''[[Regeneration (DVD box set)|Regeneration]]'' box set, a limited-edition set released in [[Region 2]] on [[24 June (releases)|24 June]] 2013 and in [[Region 4]] on [[4 September (releases)|4 September]] 2013. The fourth episode was animated. The animation was done by [[Planet 55]].


==DVD, Video and Other Releases==
* ''The Tenth Planet'' was released on DVD in region 2 on [[14 October (releases)|14 October]] [[2013 (releases)|2013]] and in region 1 on [[19 November (releases)|19 November]] 2013. The fourth episode was entirely animated.<ref>http://doctorwhotv.co.uk/series-7-classic-dvd-releases-2013-44938.htm</ref><ref>http://doctorwhotv.co.uk/the-tenth-planet-lost-episode-animated-45481.htm</ref>
*This was released on video, with a reconstruction of the missing Episode 4.
*Editing and reconstruction for release completed by [[Doctor Who Restoration Team]].


==Novelisation==
Contents:
[[Image:Tenth Planet novel.jpg|right|75px]]
* Commentary with actors [[Anneke Wills]] ([[Polly Wright|Polly]]), [[Christopher Matthews]] ([[Radar technician (The Tenth Planet)|Radar Technician]]), [[Earl Cameron]] ([[Glyn Williams|Williams]]), [[Alan White]] ([[Dan Schultz|Schultz]]), [[Gregg Palmer|Donald Van Der Maaten]] ([[CyberMondan|Cybermen]] [[Shav]] and [[Gern]]), [[Christopher Dunham]] ([[Burns (The Tenth Planet)|R/T Technician]]) and designer [[Peter Kindred]]. Moderated by [[Toby Hadoke]]
:''Main article: [[Doctor Who and the Tenth Planet]]''
* ''[[Frozen Out (documentary)|Frozen Out]]'' - Cast and crew look back on the making of the story
* Episode 4 VHS Reconstruction
* [[William Hartnell]] Interview from 1966
* ''[[Doctor Who Stories: Anneke Wills (documentary)|Doctor Who Stories - Anneke Wills]]'' - Anneke Wills look back on her role as Polly in the series, in an interview recorded for the BBC’s ''[[The Story of Doctor Who]]'' in 2003.
* ''[[The Golden Age (documentary)|The Golden Age]]'' - Historian [[Dominic Sandbrook]] examines the myth of a Golden Age of ''[[Doctor Who]]''
* ''[[Boys! Boys! Boys! (documentary)|Boys! Boys! Boys!]]'' - [[Peter Purves]], [[Frazer Hines]] and [[Mark Strickson]] reminisce about their time as companions
* ''[[Companion Piece (documentary)|Companion Piece]]'' - A psychologist, writers and some of the Doctor's companions ([[Nicola Bryant]], [[Arthur Darvill]], [[Elisabeth Sladen]], [[Louise Jameson]] among others) examine what it means to be a [[Time Lord]]'s fellow traveller
* ''[[Blue Peter (series)|Blue Peter]]'' - Tenth Anniversary retrospective on ''Doctor Who''{{'}}s history
* ''[[Radio Times]]'' Listings (DVD-ROM)
* Production Information Subtitles
* Photo Gallery
* Coming Soon Trailer - ''[[The Moonbase (TV story)|The Moonbase]]''


*Novelised as ''[[Doctor Who and the Tenth Planet]]'' by [[Gerry Davis]] in [[1986]]. In the novelisation, the regeneration is treated differently. Instead of having the Doctor collapse in the console room as in the televised story, he regenerates with the help of a device aboard the TARDIS called a sleep compressor. After he and his companions leave Snowcap base, he enters the compressor and emerges as the new Doctor. Also, unlike the televised story, the "new Doctor" asks for a mirror as there are said to be none in the TARDIS.
<gallery position="center" captionalign="center" hideaddbutton="true">


==See also==
The Tenth Planet VHS Australian cover.jpg|Australian VHS cover
*[[DW]]: ''[[Attack of the Cybermen]]''
Cybermen CD tin.jpg|"Cybermen" CD tin
*[[ST]]: ''[[Mondas Passing]]''
File:The Tenth Planet UK DVD COver.jpg|Region 2
*[[BFA]]: ''[[Spare Parts]]''
File:TheTenthPlanetDVD.jpg|Region 1
File:Tenth planet australia dvd.jpg|Region 4
The Tenth Planetcd.jpg|Individual CD release
Lost TV Eps coll3 cover.jpg|The Lost TV Episodes - Collection Three
File:The Tenth Planet Video.jpg|UK VHS cover
Doctor_Who_The_Tenth_Planet_US_VHS_Cover.jpg|US VHS cover


==External links==
</gallery>
* [http://www.bbc.co.uk/doctorwho/classic/episodeguide/tenthplanet/ Official BBC Episode Guide for '''The Tenth Planet''']
* [http://www.drwhoguide.com/who_2d.htm Doctor Who Reference Guide: Detailed Synopsis - '''The Tenth Planet''' ]
* [http://www.shannonsullivan.com/drwho/serials/dd.html A Brief History of Time (Travel) Guide to '''The Tenth Planet''']
* [http://homepages.bw.edu/~jcurtis/Scripts/TP/intro.html '''The Tenth Planet''' transcript]


== Footnotes ==
=== Notes ===
{{Notelist}}
=== Citations ===
{{reflist|2}}
== External links ==
* {{bbcepguideclassic|tenthplanet/|The Tenth Planet}}
* {{radiotimes|2009-04-13/the-tenth-planet|The Tenth Planet}}
{{dwcast}}
{{dwrefguide|who_2d.htm|The Tenth Planet}}
* {{briefhistory|serials/dd.html|The Tenth Planet}}
{{DWTV}}
{{Regeneration stories}}
{{Cyberman stories}}
{{Cyberman stories}}
{{season 4}}
{{TitleSort}}
{{Wikipedia|The_Tenth_Planet}}
[[he:הכוכב העשירי]]
[[Category:First Doctor episodes|Tenth Planet, The]]
[[pt:The Tenth Planet]]
[[Category:Cybermen episodes|Tenth Planet, The]]
[[ru:Десятая планета]]
[[Category:Stories set in 1986|Tenth Planet]]
 
[[Category:Stories set in Antarctica|Tenth Planet, The]]
[[Category:Animated missing episodes]]
[[Category:1966 television stories|Tenth Planet, The]]
[[Category:Articles that were originally Wikipedia forks]]
[[Category:Missing episodes|Tenth Planet, The]]
[[Category:Doctor Who (1963) television stories]]
[[Category:First Doctor television stories]]
[[Category:Stories set in 1986]]
[[Category:Stories set in Antarctica]]
[[Category:Stories set in Geneva]]
[[Category:1966 television stories]]
[[Category:Regeneration television stories]]
[[Category:Season 4 stories]]
[[Category:Second Doctor television stories]]
[[Category:Four part serials]]
[[Category:Television stories that use Delia Derbyshire's 1st theme]]
[[Category:Stories with missing episodes]]
[[Category:Doctor Who animated television stories]]
[[Category:Cyberman television stories]]
[[Category:New Beginnings television stories]]

Latest revision as of 20:01, 3 November 2024

RealWorld.png

You may be looking for the titular planet.

The Tenth Planet was the second serial of season 4 of Doctor Who. It was the final chronological appearance of William Hartnell as the First Doctor and introduced Patrick Troughton as the Second Doctor in the final moments of part four.

Due to the fact that The Smugglers was the final story in season 3's production block, however, The Tenth Planet was actually the first story produced in this season; from a production standpoint, this was William Hartnell's only contribution to season 4. It also introduced the Cybermen, who would become a longstanding enemy of the Doctor.

The Tenth Planet was a major historical turning point for the Doctor Who series by employing a new concept that would come to be known as regeneration. This plot mechanic has contributed to its long run on television. Likewise, it introduced the idea the Doctor has multiple incarnations and can regenerate to coincide with the departure of an actor playing an incarnation to avoid cold transition from one actor to the next.

Hartnell returned to reprise the role of the First Doctor one final time in 1972-73's The Three Doctors for the opening of the tenth anniversary season of Doctor Who, but his poor health at the time of recording meant his appearances were reduced to pre-recorded video screen images.

Currently, the fourth and final episode of this serial remains missing from the BBC film archive, with only the regeneration sequence (since it was shown in a 1973 episode of Blue Peter) and various other short clips existing intact. However, the missing episode has been carefully reconstructed in an animated format for the DVD release in 2013, and the 2017 story Twice Upon a Time recreated parts of the missing episode for its opening sequence.

Synopsis[[edit] | [edit source]]

Many years ago, Earth's twin planet, Mondas, drifted away to the edge of space. Its inhabitants grew weak, so their scientists created spare parts for their bodies. Limbs and organs were slowly replaced by metal and plastic. Emotions were removed. The Cybermen were born.

The Doctor's TARDIS lands at the Snowcap space tracking station in Antarctica in December 1986. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the Solar system.

The loss of a routine space mission and the appearance of that planet in the sky herald the arrival of the Cybermen, who are intent on the destruction of the Earth and the conversion of all humans into Cybermen. Ben and Polly fight to save the world, but it is a battle that may be the Doctor's very last.

Plot[[edit] | [edit source]]

Episode 1[[edit] | [edit source]]

Schultz and Williams aboard the Zeus IV.

The Snowcap space tracking station based on the South Pole is monitoring the launch of the manned Zeus IV atmospheric testing probe as it goes into orbit. The ship is manned by two pilots, Schultz and Williams.

The Doctor, Ben and Polly materialise outside the underground bunker of Snowcap and are soon spotted by men watching the surrounding areas through a periscope. Men are scrambled out to collect the strangers. The Doctor, Ben and Polly willingly enter Snowcap.

Inside Snowcap the Doctor, Polly and Ben are interrogated. General Cutler is sent for and responds hostilely to the strangers. Cutler decides to put them in the observation room until he has time to deal with them later. Once there, the Doctor notices a calendar on the wall saying it is December 1986. Ben is disappointed he won't be able to meet up with his ship but seems more interested when he discovers that space travel is the norm. This conversation is interrupted by a distress call from the Zeus IV space capsule which has been drawn off-course by an unknown force that drains the energy.

The pilots of Zeus IV explain that it is nowhere near the destination in which they would expect to be. Observing their location, Schultz sees another planet. Williams confirms this and says it seems to lie between Mars and Venus. Their state is also brought into confusion by the fact that the communication to Snowcap is weakened and their fuel is dropping much faster than normal.

Observing the crisis, the Doctor announces that he believes he knows the cause of the problems. He is not listened to but gives a piece of paper to Doctor Barclay. Snowcap sights the new planet before they receive the call from Zeus IV saying their fuel has reached 20% — Barclay says they should attempt to come down.

Schultz and Williams attempt to land, but they have no control over their descent as the new planet is affecting their gravitational pull.

Exasperated, Barclay goes to the Doctor for advice. The Doctor looks at a screen with the planet on it and observes that it is identical to Earth — down to the landmasses. The Doctor asks Barclay to look at the piece of paper that he had given him, and Barclay is astounded to read that the Doctor had predicted this phenomenon before they had even seen it. The Doctor tries to explain how he knew this, saying that millions of years ago there was a twin planet to Earth. Before he can go into any more detail, Cutler storms out, saying, "This is ridiculous." When alone, the Doctor explains to Ben that he fears this means invasion.

Cutler speaks to Mr Wigner, the Secretary-General of International Space Command, and informs him of the new planet as well as the strangers. Wigner demands that they be interrogated immediately.

Cutler storms in and demands the truth from the Doctor; he suspects him of being involved in this mystery. He sends Tito, the sergeant and Joe out to search the TARDIS.

The three men scramble to the TARDIS. Before they can get out, a mysterious ship lands on the surface of the South Pole. Unable to open the TARDIS, the sergeant sends Tito and Joe back to get a welder. Whilst alone, he is approached by a robotic creature who kills him with a blow to the neck. When Tito and the other soldier return, the creature is disguised in the sergeant's clothes. When he turns to reveal himself, two more robotic creatures appear and kill the two soldiers with blows to the neck. The three creatures loom over their victims.

Episode 2[[edit] | [edit source]]

The Mondas Cybermen invade the Snowcap.

The Doctor reasserts his belief that there will be visitors to Earth from the mystery planet but is pooh-poohed by Cutler. Cutler speaks to Zeus IV and promises the pilots they will be brought back safely.

Outside Snowcap, the robots disguise themselves in the clothes of their now-dead victims.

At International Space Command, a powerless Wigner is forced to watch the news to learn about the mystery planet as communications have been severed with Snowcap.

While everyone is distracted by their efforts to land Zeus IV safely, the alien invaders enter the base, killing a soldier who tries to disable them on the orders of Cutler. The base personnel and Polly plead with the creatures to allow them to save the lives of the Zeus IV crew, but the aliens proclaim that the lives of the humans are irrelevant to them. They reveal that they are known as Cybermen and were once like human beings. They lived on the planet Mondas, twinned with Earth. As Mondas drifted off into space, cybernetic scientists gradually replaced their bodies with mechanical parts and eliminated the "weaknesses" of illnesses and emotions from their brains. Cutler presses a panic button alerting International Space Control to an emergency. International Space Control gets in touch with Cutler, and the Cybermen order Cutler to inform them that it was a false alarm; Cutler refuses and is rendered unconscious by the touch of a Cyberman. Barclay is approached to do the same and refuses until the Cybermen threaten to destroy the computers that would help Zeus IV to land. Barclay yields, stating it as a fault. Once this has been done, the Cybermen inform Barclay it is impossible for the astronauts to return as Mondas' gravitational force is too close. As the Cybermen begin the process of securing Snowcap, Ben plans their escape. Seeing a gun left on the ground by the dead soldier, he picks it up but is soon spotted by a Cyberman. The gun is removed and bent in the Cyberman's grip, and Ben is removed and imprisoned in a projection room.

The Cybermen allow the Snowcap personnel to contact Zeus IV, but it is too late to save them. The ship is dragged further away from Earth by the new planet and explodes.

The Cybermen demand information on Earth and explain that Mondas' energy reserves are becoming exhausted; they intend to use all of Earth's. It is currently absorbing energy from Earth and will soon destroy it. When Polly asks if they plan to kill all of humankind, the Cybermen reveal they propose to take all humans back to Mondas.

Ben, who has been looking for a weapon, rigs up the projector to blind his Cyberman guard. He baits the Cyberman into the room. After the Cyberman is blinded, he steals the Cyberman's weapon and kills him. He seems to be affected by this death.

Ben sneaks back into the tracking room and hands the cyber-gun to the revived Cutler, who kills the remaining two Cybermen. Cutler contacts Secretary-General Wigner at Space Command HQ in Geneva and informs him of the attack. Wigner alerts all military bases and informs them that his son, Lieutenant Terry Cutler, was sent on a mission to rescue the doomed Zeus IV and, in turn, is now trapped in orbit.

As Cutler makes plans to secure Snowcap from further Cyberman invasions, including the use of anti-aircraft missiles, the radar technician announces that a fleet of spacecraft have been detected. They are approaching Earth.

Episode 3[[edit] | [edit source]]

Apparently suffering from exhaustion, the Doctor collapses and is taken to the crew quarters to rest. Cutler makes contact with Zeus V.

Polly asks Doctor Barclay for help.

Ben and Polly accompany the Doctor to his quarters. Ben checks his pulse and says he seems fine. Polly remarks that he seems "worn out".

Cutler decides it is time to take the fight to the Cybermen. He intends on destroying Mondas with a Z-bomb — a series of nuclear bombs that are placed at strategic points around the world. He rings the International Space Centre. Secretary Wigner at Geneva refuses permission, but Cutler rephrases his question asking if he can do anything he deems suitable in order to destroy the Cybermen. Wigner agrees to this, and Cutler takes this as permission to use the bomb. Ben and Polly argue against using the bomb. Ben says the Doctor believed that Mondas will destroy itself anyway when it absorbs too much energy. Cutler does not appreciate this intervention and confines Ben to the same quarters in which the Doctor is resting. Before he leaves, he implores Polly to try to convince Barclay to call off the attack.

When Ben arrives at the quarters, he tries to rouse the Doctor, to no avail. However, he soon finds a vent that he begins to loosen with his penknife.

Dyson and Cutler fuse the bomb. Cutler admits he is scared by what he is about to do but feels that he has no choice. When he returns to the control centre, he is concerned to hear that they have lost contact with Zeus V. Polly talks to Barclay, who admits he is reluctant to launch the bomb, citing the radiation caused by the exploding planet which would cause great loss of life on Earth. Polly suggests they rig the bomb so that it doesn't explode. Their plans are interrupted by Cutler, who explains they are to wait for the Cybermen to land, and then they will destroy them with their own weapons. Barclay and Polly sneak away to find Ben. Barclay explains that he would need to go through the vent to reach the bomb and tells Ben how to sabotage the rocket to prevent it from reaching Mondas. As Ben leaves, the alarm to signal the arrival of the Cybermen sounds.

The Cybermen land and are immediately mowed down by the hidden soldiers wielding the Cybermen's weapons. The soldiers collect the incapacitated Cybermen's weapons for the next assault.

Ben has reached the bomb and begins the process of disarming it but, at the control centre, Cutler notices Barclay's absence. He goes to investigate, catches Ben while he is sabotaging the rocket and knocks him unconscious. Cutler suspects Barclay of being part of this mutiny but states he needs him for the launch of the rocket.

Later, Barclay starts the countdown to the launch of the Z-bomb. Ben regains consciousness but is disorientated and cannot remember if he sabotaged the rocket before being discovered by Cutler. The countdown approaches zero.

Episode 4[[edit] | [edit source]]

As the countdown to launch the Z-bomb reaches zero, the engines fail on the launch pad. Cutler is enraged. He threatens to kill Ben, Barclay and the Doctor, who has regained consciousness and returned to the tracking room. Driven mad with grief by the apparent death of his son in the Zeus V rescue capsule, Cutler is oblivious to the warnings that another force of Cybermen are attacking the base. He also ignores the Doctor's protestations that Mondas is on the verge of burning up.

As he is about to carry out his threat and kill the Doctor, Cutler is killed by the invading Cybermen. The Doctor tries to mediate with the Cybermen, offering them a home on Earth to replace their broken up planet. The Cybermen say they will not even think about negotiations with a missile pointed at their planet and demand that it be removed before they begin negotiations. As a makeweight, they take Polly as a prisoner onto their ship.

As soon as they arrive at their ship, the Cybermen render Polly unconscious and place her in a large metal chair.

The Doctor takes charge of the control centre and contacts the International Space Centre, who themselves have been taken over by Cybermen, to tell them of the situation. The Cyberman in Geneva contacts the Cyberman at Snowcap and informs him that they must move to their secondary objective, which the Doctor assumes to be the destruction of Earth. The Doctor goes on the loud speaker system and warns all of Snowcap of this.

Down in the pit of the Z-bomb, Ben, Barclay, Haines and Dyson are disarming the bomb. Ben raises the question as to why the Cybermen are not doing this themselves, what with them being naturally stronger. Ben hypothesises that they are intolerant to the radiation in the bomb. Dyson, Haines, Barclay and Ben put this to the test by playing dead and drawing in the Cyberman guard from outside, who immediately is rendered immobile. Ben uses this knowledge to order the return of Polly; however, the Cybermen refuse to relent. The Doctor is now taken to the Cybership. The Cybermen warn Ben that both he and Polly will be killed unless they give up the bomb. Ben looks around for something in the room that is portable and radioactive that they can use to their advantage. With the help of Barclay and Dyson, he uncouples something from the back of one of the computers he can use for this purpose. They hide behind the door as the Cybermen approach. The Cybermen attempt to gas the four men out. When Ben and the rest cannot take any more, they open the door and use a combination of the deactivated Cyberman's gun and the radioactive equipment to deactivate the Cybermen. However, Haines is killed.

On returning to the control base of Snowcap, Barclay shows Ben a device that the Cybermen used to contact each other. Ben uses it randomly to draw the Cybermen in. Whilst they wait, the lights dim as Mondas draws yet more power from Earth. As the Cybermen approach, one of the scientists points to the screen where they see Mondas flash brightly and melt. The Cybermen that were approaching the humans disintegrate as the power source they had drawn from has been lost. Zeus V returns onscreen; its pilot explains that all power has been restored and he can attempt re-entry.

Ben runs out to the Cybership to free Polly and a semi-conscious Doctor. The Doctor seems to deliberate as to whether "it's all over" before settling that it's "far from being all over" and alerting his companions that he must return to the TARDIS immediately. Ben gives him his cloak so he won't "catch his death of cold", but the Doctor gives him an unusually distant reply, concerned with something more important at hand. He says, "Ah, yes. Thank you. It's good. Keep warm," in a very abbreviated way, without a lick of humour to be found. Bearing little attention to Ben or Polly, he even deserts them, rushing off alone.

An amazing transformation begins...

The weary Doctor returns to the TARDIS and closes the door, trying to take care of a dire situation by himself — his body has worn too thin and he is dying from old age, but very soon, that problem will be resolved. He wants his companions safely away from him when a particular event happens, but they are protesting for him to let them inside anyway. As Ben and Polly hammer on the door, the controls operate of their own accord and the central column begins to rise and fall. The Doctor seizes enough energy to open the door, and Ben and Polly finally get in. Barely conscious, the Doctor collapses to the floor. Ben and Polly stand back as the Doctor becomes enveloped in a bright light. After the light dies down, the Doctor's face is different and has the appearance of a younger, dark-haired man...

Cast[[edit] | [edit source]]

Uncredited cast[[edit] | [edit source]]

Crew[[edit] | [edit source]]

Uncredited Crew[[edit] | [edit source]]

Animation Unit[[edit] | [edit source]]

A Planet 55 Production for Pup Ltd

Worldbuilding[[edit] | [edit source]]

Biology[[edit] | [edit source]]

  • Space fatigue is hypothesised as the cause of the Zeus IV pilots' tiredness, influenced by Mondas' gravity.

Foods and beverages[[edit] | [edit source]]

  • Polly makes several cups of coffee.

Locations[[edit] | [edit source]]

Individuals[[edit] | [edit source]]

Media[[edit] | [edit source]]

Organisations[[edit] | [edit source]]

Popular culture[[edit] | [edit source]]

Planets[[edit] | [edit source]]

  • An Earth expedition has just returned from the Moon.

Technology[[edit] | [edit source]]

  • A retinascope is part of the rocket.
  • Nuclear Z-Bombs, able to destroy a planet or turn it into a star, can be launched via a Demeter rocket.
  • According to Ben, locks are different than the 1966 ones, so he cannot force them.

Influences[[edit] | [edit source]]

Story notes[[edit] | [edit source]]

  • This is the first time the regeneration process is seen. The process is not given a name until Planet of the Spiders in 1974.
  • Only episodes one, two and three of this four-part story exist in the BBC Archives as 16mm black & white film telerecordings. Only short clips of footage from the missing episode four exist, among which are the regeneration sequence itself; the sequence exists thanks to it having been included in an early 1970s edition of Blue Peter that discussed the transition to the new Doctor. The regeneration is one of several sequences from lost episodes (Katarina's death in The Daleks' Master Plan being another) that were inadvertently preserved through their use on Blue Peter episodes that were not wiped.
  • William Hartnell left Doctor Who due to bad health, but upon leaving had said, "If there is one man in England who can replace me as the Doctor, it's Patrick Troughton!" Troughton took over the role of the Doctor when Hartnell regenerated into Troughton. Hartnell returned in The Three Doctors in 1972 to celebrate the show's tenth anniversary, but because of his poor health he was unable to appear live alongside his successors, Jon Pertwee and Patrick Troughton — instead appearing only in pre-recorded sequences shown on video screens. He died three years later.
  • William Hartnell did not appear in episode three as he had been taken ill. On the Monday before the programme was due to be recorded, he sent a telegram to the production team informing them that he was too unwell to work. Gerry Davis rewrote the script to explain the Doctor's absence (his sudden collapse) and gave his dialogue to other characters, most noticeably Ben. This was not as much of an interruption to the episode's production as it would seem, as all four episodes had been written so that Hartnell would have relatively little to do in case of just such an event. The original draft of episode four did not feature the Doctor regenerating at the end. This has led to the sad irony of the last surviving episode of William Hartnell's era not featuring Hartnell himself.
  • Special "computer tape"-style opening and closing title graphics were created for this story by graphic designer Bernard Lodge.
  • This is the only TV story to give Cybermen characters individual names (Krang, Jarl etc). After this, Cybermen were only ever named by rank (Cyber Leader, Cyber Controller etc).
  • This is the first time that the second broadcast story of a season did not feature the Daleks.
  • At the time of the serial's original broadcast, as well as the timeframe of the serial (1986), Pluto was still considered a planet and therefore the story title and dialogue referring to Mondas as the solar system's tenth planet was correct. A later story, The Sun Makers, set on Pluto, will suggest it regains planetary status at some point in the future.
  • The First Doctor's last words were originally scripted as something similar to "No... no, I simply will not give in!" Time was running short towards the end of production, and Derek Martinus opted not to record the line, wanting to ensure that the regeneration sequence was recorded as well as possible. As a result, the First Doctor's last words were simply, "Ah! Yes. Thank you. That's good, keep warm." In Twice Upon a Time, the Doctor's final words are given as "Well then, here we go, the long way round."
  • In the original script, the Cybermen had human faces (albeit all rather similar), with a metal plate under their hair. Their hands were also to be human, although their arms would be transparent, made up of rods and lights. A movable arm was also to extend from each Cyberman's chest unit, but such an accessory was considered too costly to implement.
  • Williams was originally Welsh. Derek Martinus cast Bermudan actor Earl Cameron in the role, deciding that he could be black and Welsh.
  • Michael Craze found this work difficult, as he had just undergone surgery to remove a bone chip from his nose (during which he suffered a burst blood vessel which nearly cost him his life) and the jabolite "snow" blown around the film stage irritated his nose badly. Nonetheless, Craze was undeterred from asking out production assistant Edwina Verner, whose job it was to throw the jabolite into the wind machine — and the two would subsequently marry.
  • The Doctor shows some understanding of the Cybermen, although the precise extent of his knowledge is not made clear. A few future stories in spin-off media use this as an opportunity to imply that he has met or heard of the Cybermen before:
  • The missing episode four, animated in 2013, begins a run of seven animated reconstructions through to the end of TV: The Power of the Daleks, which was released in animated form three years later. This was the longest consecutive run of animated reconstructions produced by the BBC until 2019 when it was announced that TV: The Faceless Ones would be receiving an animated reconstruction.
  • With the UHD Blu-ray release of TV: Twice Upon a Time in September 2018, The Tenth Planet has become the first and, to date, only classic-era serial to see footage upscaled to 4K resolution.
  • Episode four of this story begins a run of twelve missing episodes that concludes with episode one of The Underwater Menace. As of 2020, this is the longest run of missing episodes. Additionally, Season 4, of which this story is a part, currently has no complete serials, and this story is the only one in the season to be missing only a single episode.
  • Anneke Wills recalled that the Cybermen had her in stitches because they looked so cheap, but the actors were all "six foot hunks".
  • Michael Craze initially didn't think much of the Cybermen, recalling that they were held together by sellotape.
  • The regeneration scene took a whole day to film.
  • Stock footage of a Blue Streak missile test was used for the launch of the Zeus IV spacecraft.
  • When Graham Strong lent his audio recordings of all four episodes to the Doctor Who Restoration Team in the 1990s, certain parts of the tapes were revealed to have a higher soundtrack quality than the three surviving episodes themselves.
  • The Cybermen actors were so hot in their costumes under the studio lights that some of them fainted.
  • The story originally ended with the Doctor, Polly and Ben simply leaving in the TARDIS, to the bewilderment of Barclay and Dyson.
  • The regeneration scene would have originally simply seen William Hartnell collapse on the floor of the TARDIS console room with his cloak covering his face; in the first episode of The Power of the Daleks, the cloak would have been pulled back to reveal Patrick Troughton instead.
  • The story depicts an American spaceship being lost with all hands in the year 1986. By a spooky coincidence, in the real-world year of 1986, the United States actually would lose one of their spacecraft with all hands via the mid-takeoff explosion of the Space Shuttle Challenger.
  • The part of Dyson was first offered to Bernard Hepton, but the production team had to reluctantly withdraw the offer because rewriting had made the role too nondescript for an actor of his stature.
  • Anneke Wills later claimed that William Hartnell was racist and objected to Earl Cameron's casting. She said that she and Michael Craze were ashamed of his attitude.
  • Kit Pedler's wife came up with the serial's title.
  • Soon after starting work on the script, Kit Pedler became seriously ill with ulcerative colitis, which required surgery and an extended stay in hospital. Having already contributed to the development of the storyline, Gerry Davis agreed to assist in the scripting duties as well. Davis would be credited as the co-author of the final two episodes, and copyright on the Cybermen would be split equally between the writers. As it turned out, Davis basically wrote the first draft of each script, concentrating on the action elements, then Pedler wrote a second draft, filling in more scientific details. The pair cooperatively completed a third and final draft.
  • Once filming was completed, the cast and crew retired to a farewell party in William Hartnell's honour at Innes Lloyd's home.
  • Both Gerry Davis and Innes Lloyd liked the space capsule idea, since both the US and the USSR were in the middle of the space race at the time.
  • Malcolm Hulke had previously pitched an idea about Earth having a twin planet for Season 1 called The Hidden Planet.

Ratings[[edit] | [edit source]]

  • Episode 1 - 5.5 million viewers
  • Episode 2 - 6.4 million viewers
  • Episode 3 - 7.6 million viewers
  • Episode 4 - 7.5 million viewers

Myths[[edit] | [edit source]]

  • An attempt was once made to colourise parts of this story. (This was an April Fools' joke in Doctor Who Magazine.)
  • A test regeneration was filmed during production of The Smugglers. (This too was an April Fools' joke in Doctor Who Magazine.)
  • The master copy of episode four was lost in 1973 after being lent to the BBC's children's magazine programme Blue Peter for a feature they were compiling about the series. (It is unknown how this episode came to be lost; the episode that was lost after being lent out to Blue Peter was "The Traitors", the fourth episode of The Daleks' Master Plan.)
  • Home video releases use Graham Strong's audio tapes for episodes one, two and three instead of the soundtracks from the actual surviving prints. (This has never been confirmed.)

Filming locations[[edit] | [edit source]]

Production errors[[edit] | [edit source]]

If you'd like to talk about narrative problems with this story — like plot holes and things that seem to contradict other stories — please go to this episode's discontinuity discussion.
  • Sometimes the Cybermen start to talk before their mouths open.
  • The Cyberman helmets were held together with Gaffatape, which can clearly be seen in this episode.
  • When the Cybermen are ambushed outside, one of them has part of his headpiece (one of the "jug handles") come loose.
  • On two occasions, Robert Beatty fluffs his lines, as a result of which Cutler mistakenly refers to Wigner as "General-Secretary" instead of "Secretary-General", as well referring to Dyson as "Barclay" while overseeing the arming of the Z-bomb.
  • The reprise at the start of episode three is a remount of episode two's cliffhanger, not a telerecording of the final moments of episode two, and the dialogue between Cutler and the technician at the beginning of episode three is slightly different from that which closed episode two.
  • In episode four, Michael Craze commits a Spoonerism. He accidentally says "plonet Mandos" instead of "planet Mondas."
  • In episode two, while Krail is proposing his plan to take the humans to Mondas (and after the Doctor has shouted his objections), his head-mounted lamp / "third eye" starts reflecting studio lights.
  • At the beginning of episode two, when the Cyberman looks past the camera, the wall showing the Antarctic behind him briefly cuts off, showing the studio.
  • In the opening credits of episode one, Kit Pedler's name is misspelled as Kitt Pedler
  • Similarly, in the opening credits of episode three, Gerry Davis' name is misspelled as Gerry Davies.

Continuity[[edit] | [edit source]]

Home video and audio releases[[edit] | [edit source]]

Digital releases[[edit] | [edit source]]

Until 31 October 2017, this story was available in BBC Store (UK). The fourth episode was represented as an animated reconstruction with original soundtrack.

DVD, VHS and audio releases[[edit] | [edit source]]

Contents:

  • Australian VHS cover

    Australian VHS cover

  • "Cybermen" CD tin

    "Cybermen" CD tin

  • Region 2

    Region 2

  • Region 1

    Region 1

  • Region 4

    Region 4

  • Individual CD release

    Individual CD release

  • The Lost TV Episodes - Collection Three

    The Lost TV Episodes - Collection Three

  • UK VHS cover

    UK VHS cover

  • US VHS cover

    US VHS cover

Footnotes[[edit] | [edit source]]

Notes[[edit] | [edit source]]

  1. ↑ Both Planet of the Dead and The End of Time are referred to in dialogue as taking place after the end of Journey's End, which is set in either 2008, according to TV: The Fires of Pompeii, TV: The Waters of Mars, and AUDIO: SOS, or six weeks after the middle of May 2009, circa June, according to PROSE: Beautiful Chaos. However, the year of The End of Time is unspecified, as is whether or not it is intended to be the Christmas immediately after Journey's End.

Citations[[edit] | [edit source]]

  1. ↑ Skilleter, A., Blacklight, p30. ISBN 9781852274153.
  2. ↑ http://doctorwhotv.co.uk/series-7-classic-dvd-releases-2013-44938.htm
  3. ↑ http://doctorwhotv.co.uk/the-tenth-planet-lost-episode-animated-45481.htm

External links[[edit] | [edit source]]

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