Twice Upon a Time (TV story): Difference between revisions

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{{Infobox Story
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|image          = Twice Upon a Time Two Doctors.jpg
|image          = Twice Upon a Time Two Doctors.jpg
|series          = [[Doctor Who television stories|''Doctor Who'' television stories]]
|series          = [[Doctor Who television stories|''Doctor Who'' television stories]]
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While not known at the time, this would also turn out to be the last consecutive Christmas special of the revived series, breaking the streak that began with ''[[The Christmas Invasion (TV story)|The Christmas Invasion]]'' in [[2005 (releases)|2005]]. The show would forgo its usual Christmas special in [[2018 (releases)|2018]] in favour of a [[New Year Special]] at the beginning of [[2019 (releases)|2019]]. In 2019, the Christmas special was again foregone in favour of the premiere episode of [[Series 12 (Doctor Who)|Series 12]] on New Year's Day [[2020 (releases)|2020]].
While not known at the time, this would also turn out to be the last consecutive Christmas special of the revived series, breaking the streak that began with ''[[The Christmas Invasion (TV story)|The Christmas Invasion]]'' in [[2005 (releases)|2005]]. The show would forgo its usual Christmas special in [[2018 (releases)|2018]] in favour of a [[New Year Special]] at the beginning of [[2019 (releases)|2019]]. In 2019, the Christmas special was again foregone in favour of the premiere episode of [[Series 12 (Doctor Who)|Series 12]] on New Year's Day [[2020 (releases)|2020]].


== Synopsis ==
==Synopsis==
As the Doctor nears regeneration, he stumbles on his original self, also refusing to change. It takes a captain, a glass avatar and a familiar face to convince the Doctors the universe still needs them.
As the Doctor nears regeneration, he stumbles on his original self, also refusing to change. It takes a captain, a glass avatar and a familiar face to convince the Doctors the universe still needs them.


== Plot ==
==Plot==
The [[First Doctor]] nears his end after an [[The Tenth Planet (TV story)|encounter]] with the [[Cyberman|Cybermen]] from [[Mondas]]. He is freed from his restraints by his companions Ben and Polly, now that the threat is over. However, he is weak, his body beginning to [[regenerate]]. Refusing to give in, the Doctor leaves and wanders the South Pole, mumbling to himself that he will not change. Nearing his [[The Doctor's TARDIS|TARDIS]], he hears a voice in the distance yelling in defiance. Seeing a figure kneeling outside his TARDIS, the Doctor asks who the man is. The man claims to be [[the Doctor]]. With a smug sense of superiority, the First Doctor tells the man that's not true; "you may be ''a'' doctor, but I am ''the'' Doctor. The original, you might say."
The [[First Doctor]] nears his end after an [[The Tenth Planet (TV story)|encounter]] with the [[Cyberman|Cybermen]] from [[Mondas]]. He is freed from his restraints by his companions Ben and Polly, now that the threat is over. However, he is weak, his body beginning to [[regenerate]]. Refusing to give in, the Doctor leaves and wanders the South Pole, mumbling to himself that he will not change. Nearing his [[The Doctor's TARDIS|TARDIS]], he hears a voice in the distance yelling in defiance. Seeing a figure kneeling outside his TARDIS, the Doctor asks who the man is. The man claims to be [[the Doctor]]. With a smug sense of superiority, the First Doctor tells the man that's not true; "you may be ''a'' doctor, but I am ''the'' Doctor. The original, you might say."


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Smoke fills the console room and the Twelfth Doctor's [[The Doctor's wedding ring|wedding ring]] falls from a finger it no longer fits. Once the smoke clears, the [[Thirteenth Doctor]] stands in silence for a moment, before grabbing one of the console's monitors. Using its reflective surface, she studies her new appearance in stunned wonderment, realising that she has now become female for the first time. Her face cracks into a wide, ecstatic grin as she exclaims "Oh, brilliant!" at the discovery. Excited, she presses a button on the console. Upon doing so, the TARDIS suddenly suffers multiple failures and, hanging thousands of feet above the Earth, sharply jerks causing the doors to face the ground. The Doctor tries to hang on but the doors open, threatening to suck her out. As the Doctor grabs the console, the ship continues to shake, sending all of her books and papers flying out the open doors. The Doctor tries to close the doors, but the time rotor shatters and the panel she's holding onto breaks away, sending her falling out of the ship. In freefall towards the Earth below, the Doctor watches the inside of her TARDIS become swamped by flames before vanishing from sight as she plummets through the clouds...
Smoke fills the console room and the Twelfth Doctor's [[The Doctor's wedding ring|wedding ring]] falls from a finger it no longer fits. Once the smoke clears, the [[Thirteenth Doctor]] stands in silence for a moment, before grabbing one of the console's monitors. Using its reflective surface, she studies her new appearance in stunned wonderment, realising that she has now become female for the first time. Her face cracks into a wide, ecstatic grin as she exclaims "Oh, brilliant!" at the discovery. Excited, she presses a button on the console. Upon doing so, the TARDIS suddenly suffers multiple failures and, hanging thousands of feet above the Earth, sharply jerks causing the doors to face the ground. The Doctor tries to hang on but the doors open, threatening to suck her out. As the Doctor grabs the console, the ship continues to shake, sending all of her books and papers flying out the open doors. The Doctor tries to close the doors, but the time rotor shatters and the panel she's holding onto breaks away, sending her falling out of the ship. In freefall towards the Earth below, the Doctor watches the inside of her TARDIS become swamped by flames before vanishing from sight as she plummets through the clouds...


== Cast ==
==Cast==
* [[Twelfth Doctor|The Doctor]] - [[Peter Capaldi]]
*[[Twelfth Doctor|The Doctor]] - [[Peter Capaldi]]
* [[First Doctor|The Doctor]] - [[David Bradley]]
*[[First Doctor|The Doctor]] - [[David Bradley]]
* [[Glass avatar|Bill]] - [[Pearl Mackie]]
*[[Glass avatar|Bill]] - [[Pearl Mackie]]
* [[Archibald Hamish Lethbridge-Stewart|The Captain]] - [[Mark Gatiss]]
*[[Archibald Hamish Lethbridge-Stewart|The Captain]] - [[Mark Gatiss]]
* [[Glass avatar|Clara]] - [[Jenna Coleman]]
*[[Glass avatar|Clara]] - [[Jenna Coleman]]
* [[Glass avatar|Nardole]] - [[Matt Lucas]]
*[[Glass avatar|Nardole]] - [[Matt Lucas]]
* [[Helen Clay]] - [[Nikki Amuka-Bird]]
*[[Helen Clay]] - [[Nikki Amuka-Bird]]
* [[German soldier (Twice Upon a Time)|German Soldier]] - [[Toby Whithouse]]
*[[German soldier (Twice Upon a Time)|German Soldier]] - [[Toby Whithouse]]
* [[Polly Wright|Polly]] - [[Lily Travers]]
*[[Polly Wright|Polly]] - [[Lily Travers]]
* [[Ben Jackson|Ben]] - [[Jared Garfield]]
*[[Ben Jackson|Ben]] - [[Jared Garfield]]
* [[Rusty (Into the Dalek)|Voice of the Daleks]] - [[Nicholas Briggs]]
*[[Rusty (Into the Dalek)|Voice of the Daleks]] - [[Nicholas Briggs]]
* [[Thirteenth Doctor|The Doctor]] - [[Jodie Whittaker]]
*[[Thirteenth Doctor|The Doctor]] - [[Jodie Whittaker]]


===== ''[[The Tenth Planet (TV story)|The Tenth Planet]]'' =====
=====''[[The Tenth Planet (TV story)|The Tenth Planet]]''=====
* [[First Doctor|The Doctor]] - [[William Hartnell]]
*[[First Doctor|The Doctor]] - [[William Hartnell]]
* [[Polly Wright|Polly]] - [[Anneke Wills]]
*[[Polly Wright|Polly]] - [[Anneke Wills]]
* [[Ben Jackson|Ben]] - [[Michael Craze]]
*[[Ben Jackson|Ben]] - [[Michael Craze]]
* [[Second Doctor|The Doctor]] - [[Patrick Troughton]] (uncredited)
*[[Second Doctor|The Doctor]] - [[Patrick Troughton]] (uncredited)


== Crew ==
==Crew==
{{wales crew
{{wales crew
|1stAD=Mark Hedges
|1stAD=Mark Hedges
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}}
}}


=== Uncredited crew ===
===Uncredited crew ===
* [[Writer]] - [[Chris Chibnall]]<ref name="DWM" />
*[[Writer]] - [[Chris Chibnall]]<ref name="DWM" />
* [[Visual effects supervisor|VFX Supervisor]] - [[Murray Barber]]<ref name="Milk VFX">{{cite web|url=http://www.milk-vfx.com/project/doctor-who-christmas-special/|title=Doctor Who Christmas Special 2017|website name=Milk VFX|accessdate=18 October 2018}}</ref>
*[[Visual effects supervisor|VFX Supervisor]] - [[Murray Barber]]<ref name="Milk VFX">{{cite web|url=http://www.milk-vfx.com/project/doctor-who-christmas-special/|title=Doctor Who Christmas Special 2017|website name=Milk VFX|accessdate=18 October 2018}}</ref>
* [[CG supervisor|CG Supervisor]] - [[Dominic Alderson]]<ref name="Milk VFX" />
*[[CG supervisor|CG Supervisor]] - [[Dominic Alderson]]<ref name="Milk VFX" />
* [[Visual effects producer|VFX Producer]] - [[Louise Hastings]]<ref name="Milk VFX" />
*[[Visual effects producer|VFX Producer]] - [[Louise Hastings]]<ref name="Milk VFX" />


== References ==
==References==
=== Culture ===
===Culture ===
* [[Great Britain|British]] [[British Army|soldiers]] are fighting [[Germany|German]] [[German Army|soldiers]].
*[[Great Britain|British]] [[British Army|soldiers]] are fighting [[Germany|German]] [[German Army|soldiers]].


=== Technology ===
===Technology ===
* The soldiers in [[World War I]] uses [[gun]]s and [[rifle]]s.
* The soldiers in [[World War I]] uses [[gun]]s and [[rifle]]s.
* The Captain finds a [[VHS cassette]] inside the Twelfth Doctor's TARDIS.
* The Captain finds a [[VHS cassette]] inside the Twelfth Doctor's TARDIS.
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* The Twelfth Doctor attempts to connect the [[Helen Clay|glass woman]] via the sonic sunglasses and [[TARDIS scanner]] to the [[TARDIS information system|TARDIS databanks]]. He, however, finds that due to it being the First Doctor's TARDIS, there's hardly anything there, and needs a bigger one, and suggests the [[The Matrix|Matrix]] on [[Gallifrey]].
* The Twelfth Doctor attempts to connect the [[Helen Clay|glass woman]] via the sonic sunglasses and [[TARDIS scanner]] to the [[TARDIS information system|TARDIS databanks]]. He, however, finds that due to it being the First Doctor's TARDIS, there's hardly anything there, and needs a bigger one, and suggests the [[The Matrix|Matrix]] on [[Gallifrey]].
* The First Doctor picks up a [[Dalek eyestalk]].
* The First Doctor picks up a [[Dalek eyestalk]].
* Rusty "gets naked" for the Twelfth Doctor by ejecting his [[gunstick]].
*Rusty "gets naked" for the Twelfth Doctor by ejecting his [[gunstick]].
* The Twelfth Doctor mentions the [[Dalek]] [[hive mind]].
* The Twelfth Doctor mentions the [[Dalek]] [[hive mind]].
* The glass woman says that a [[perception filter]] will render her and the Doctors invisible to the soldiers on the battlefield.
* The glass woman says that a [[perception filter]] will render her and the Doctors invisible to the soldiers on the battlefield.


=== Biology ===
===Biology ===
* When the First and Twelfth Doctors shake hands, [[regeneration energy]] glows intensely from them.
*When the First and Twelfth Doctors shake hands, [[regeneration energy]] glows intensely from them.


=== Food and beverages ===
===Food and beverages ===
* A soldier is seen drinking [[tea]].
*A soldier is seen drinking [[tea]].
* Both Doctors have [[Aldebaran]] [[brandy]] in a compartment behind one of the [[roundel]]s in each of their TARDISes.
*Both Doctors have [[Aldebaran]] [[brandy]] in a compartment behind one of the [[roundel]]s in each of their TARDISes.
* The soldiers are drinking [[beer]].
* The soldiers are drinking [[beer]].
* The Twelfth Doctor tells [[Thirteenth Doctor|his future self]] to never eat [[pear]]s.
* The Twelfth Doctor tells [[Thirteenth Doctor|his future self]] to never eat [[pear]]s.


=== Art ===
=== Art ===
* A soldier is seen [[drawing]] a [[picture]].
*A soldier is seen [[drawing]] a [[picture]].


=== Sport ===
===Sport ===
* The [[World War I]] soldiers are playing [[football]].
* The [[World War I]] soldiers are playing [[football]].


=== People ===
===People ===
* [[Archibald Hamish Lethbridge-Stewart|Captain Lethbridge-Stewart]] and a [[German soldier (Twice Upon a Time)|German soldier]] both have no desire to kill the other, wishing the other spoke [[English language|English]] and [[German language|German]], respectively.
*[[Archibald Hamish Lethbridge-Stewart|Captain Lethbridge-Stewart]] and a [[German soldier (Twice Upon a Time)|German soldier]] both have no desire to kill the other, wishing the other spoke [[English language|English]] and [[German language|German]], respectively.
* The First Doctor remarks that it's a shame [[Polly Wright]] isn't around, saying that the Twelfth Doctor's TARDIS is in dire need of [[dusting]].
* The First Doctor remarks that it's a shame [[Polly Wright]] isn't around, saying that the Twelfth Doctor's TARDIS is in dire need of [[dusting]].
* Bill tells the Doctor about [[Heather (The Pilot)|Heather]], the [[sentient oil]] girl, coming back for her, to which the Twelfth Doctor notes "how [[romance|romantic]]".
*Bill tells the Doctor about [[Heather (The Pilot)|Heather]], the [[sentient oil]] girl, coming back for her, to which the Twelfth Doctor notes "how [[romance|romantic]]".
* Bill asks the First Doctor about his reason for running away from Gallifrey.
*Bill asks the First Doctor about his reason for running away from Gallifrey.
* The Doctor finds Rusty inside a tower in [[Villengard]].
* The Doctor finds Rusty inside a tower in [[Villengard]].
* Rusty projects a video of a [[Professor]] [[Helen Clay]].
*Rusty projects a video of a [[Professor]] [[Helen Clay]].
* [[Clara Oswald]] appears to the Twelfth Doctor and his [[memories]] of her return.
*[[Clara Oswald]] appears to the Twelfth Doctor and his [[memories]] of her return.
* [[Nardole]] returns to say goodbye to the Doctor.
*[[Nardole]] returns to say goodbye to the Doctor.
* Nardole reveals that he had [[nipple]]s made of [[glass]] and that he has invisible [[hair]].
*Nardole reveals that he had [[nipple]]s made of [[glass]] and that he has invisible [[hair]].


=== Species ===
===Species ===
* The First Doctor asks the Twelfth Doctor, not realising he's talking to his future self, if he is another [[Time Lord]].
* The First Doctor asks the Twelfth Doctor, not realising he's talking to his future self, if he is another [[Time Lord]].
* The Twelfth Doctor says the First Doctor was "weak as a [[Cat|kitten]]" when he started regenerating.
* The Twelfth Doctor says the First Doctor was "weak as a [[Cat|kitten]]" when he started regenerating.
* A [[bird]] freezes mid-air.
*A [[bird]] freezes mid-air.
* [[Glass avatar]]s, part of the [[Testimony]], are creatures with the ability to freeze time and extract memories and personality of a dying person so they will remain forever.
*[[Glass avatar]]s, part of the [[Testimony]], are creatures with the ability to freeze time and extract memories and personality of a dying person so they will remain forever.
* The TARDIS team encounters [[Dalek mutant]]s which have mutated even further. The Captain first thinks they are [[rat]]s, saying he is used to those.
* The TARDIS team encounters [[Dalek mutant]]s which have mutated even further. The Captain first thinks they are [[rat]]s, saying he is used to those.


=== Locations ===
===Locations ===
* The First Doctor has just left the [[Snowcap]] base in search for his TARDIS.
* The First Doctor has just left the [[Snowcap]] base in search for his TARDIS.
* The Doctors meet each other at the [[South Pole]].
* The Doctors meet each other at the [[South Pole]].
* [[Archibald Hamish Lethbridge-Stewart|Captain Lethbridge-Stewart]] is fighting during [[World War I]] in [[Ypres]], in [[1914]].
*[[Archibald Hamish Lethbridge-Stewart|Captain Lethbridge-Stewart]] is fighting during [[World War I]] in [[Ypres]], in [[1914]].
* The First Doctor says to the glass avatar that it is on [[Earth]], a "[[level 5 planet|level 5 civilisation]]".
* The First Doctor says to the glass avatar that it is on [[Earth]], a "[[level 5 planet|level 5 civilisation]]".
* The Doctors and the Captain are taken to the [[Chamber of the Dead]] inside a [[Testimony spaceship]].
* The Doctors and the Captain are taken to the [[Chamber of the Dead]] inside a [[Testimony spaceship]].
* [[Gallifrey]] is mentioned.
*[[Gallifrey]] is mentioned.
* The TARDIS team travels to the [[centre of the universe|centre]] of the [[universe]].
* The TARDIS team travels to the [[centre of the universe|centre]] of the [[universe]].
* The TARDIS team visits [[Villengard]]. [[Villengard's moon|The moon]] is in the process of destruction.
* The TARDIS team visits [[Villengard]]. [[Villengard's moon|The moon]] is in the process of destruction.
* The Twelfth Doctor calls Villengard's [[Weapon Forge]]s "The Nightmare of the [[Seven Galaxies]]".
* The Twelfth Doctor calls Villengard's [[Weapon Forge]]s "The Nightmare of the [[Seven Galaxies]]".
* The Captain says that his death would be a big shock for everyone back in [[Cromer]].
* The Captain says that his death would be a big shock for everyone back in [[Cromer]].
* Rusty projects a video of [[Professor]] [[Helen Clay]] from the [[University of New Earth]] on [[New Earth (New Earth)|New Earth]] in the year [[5000000012|5,000,000,012]].
*Rusty projects a video of [[Professor]] [[Helen Clay]] from the [[University of New Earth]] on [[New Earth (New Earth)|New Earth]] in the year [[5000000012|5,000,000,012]].


=== Events ===
===Events ===
* The [[aurora|aurora australis]] appears in the sky above the [[South Pole]].
* The [[aurora|aurora australis]] appears in the sky above the [[South Pole]].
* The [[glass avatar]]s freeze time at the [[South Pole]] in [[1986]] only minutes after the battle at [[Snowcap]] base.
* The [[glass avatar]]s freeze time at the [[South Pole]] in [[1986]] only minutes after the battle at [[Snowcap]] base.
* The glass avatars freeze time during [[World War I]] in [[Ypres]] [[1914]] just before the [[Christmas truce]].
* The glass avatars freeze time during [[World War I]] in [[Ypres]] [[1914]] just before the [[Christmas truce]].
* When the glass avatars misplace the Captain they call it a [[timeline error]].
*When the glass avatars misplace the Captain they call it a [[timeline error]].
* The [[Christmas truce]] is held on the [[World War I]] [[battlefield]] of [[Ypres]] on [[25 December]], [[1914]].
* The [[Christmas truce]] is held on the [[World War I]] [[battlefield]] of [[Ypres]] on [[25 December]], [[1914]].
* The Captain says he told [[Archibald Hamish Lethbridge-Stewart's wife|his wife]] he'd be home for [[Christmas]].
* The Captain says he told [[Archibald Hamish Lethbridge-Stewart's wife|his wife]] he'd be home for [[Christmas]].
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* The Twelfth Doctor's [[ring]] falls off the [[Thirteenth Doctor]]'s hand, as it doesn't fit on her finger.
* The Twelfth Doctor's [[ring]] falls off the [[Thirteenth Doctor]]'s hand, as it doesn't fit on her finger.


=== TARDIS ===
===TARDIS ===
* The First Doctor calls [[The Doctor's TARDIS|the TARDIS]] "the Ship", much to the Twelfth Doctor's nostalgic joy.
* The First Doctor calls [[The Doctor's TARDIS|the TARDIS]] "the Ship", much to the Twelfth Doctor's nostalgic joy.
* The First Doctor disapproves of the Twelfth Doctor's TARDIS, saying about the [[TARDIS control room|console room]] that it is "the flight deck of the most powerful space-time machine in the known universe, [it's] not a [[restaurant]] for the [[France|French]]".
* The First Doctor disapproves of the Twelfth Doctor's TARDIS, saying about the [[TARDIS control room|console room]] that it is "the flight deck of the most powerful space-time machine in the known universe, [it's] not a [[restaurant]] for the [[France|French]]".
* The Twelfth Doctor still has [[blackboard]]s in his TARDIS.
* The Twelfth Doctor still has [[blackboard]]s in his TARDIS.
* Bill remarks the [[window]]s on the First Doctor's TARDIS exterior are the wrong size.
*Bill remarks the [[window]]s on the First Doctor's TARDIS exterior are the wrong size.
* The First Doctor's TARDIS has a name tag on the console that says [[Bernard Wilkie]].
* The First Doctor's TARDIS has a name tag on the console that says [[Bernard Wilkie]].
* The [[Cloister Bell]] rings in the Twelfth Doctor's TARDIS before he regenerates.
* The [[Cloister Bell]] rings in the Twelfth Doctor's TARDIS before he regenerates.
* The Twelfth Doctor's TARDIS interior ends up exploding due to "Multiple Operations Failures" after the [[Thirteenth Doctor]] causes a "Systems Crisis" by clicking a red button on the console. The exploding TARDIS throws the Doctor out as it dematerialises.
* The Twelfth Doctor's TARDIS interior ends up exploding due to "Multiple Operations Failures" after the [[Thirteenth Doctor]] causes a "Systems Crisis" by clicking a red button on the console. The exploding TARDIS throws the Doctor out as it dematerialises.


=== Music ===
===Music ===
* The British soldiers sing "[[Silent Night]]" and the German soldiers sing the German version, known as "Stille Nacht".
* The British soldiers sing "[[Silent Night]]" and the German soldiers sing the German version, known as "Stille Nacht".


== Story notes ==
==Story notes==
* Though brief, this was the debut performance for [[Jodie Whittaker]] as the [[Thirteenth Doctor]]. Her scene was written by the incoming showrunner [[Chris Chibnall]].<ref name="DWM" />
*Though brief, this was the debut performance for [[Jodie Whittaker]] as the [[Thirteenth Doctor]]. Her scene was written by the incoming showrunner [[Chris Chibnall]].<ref name="DWM" />
* The cinematic, DVD and Blu-ray releases featured two documentaries: ''[[The End of an Era]]'', a retrospective and behind-the-scenes look, before the showing, and ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]'' at the end, an in-depth look into the making of the Christmas special.
* The cinematic, DVD and Blu-ray releases featured two documentaries: ''[[The End of an Era]]'', a retrospective and behind-the-scenes look, before the showing, and ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]'' at the end, an in-depth look into the making of the Christmas special.
* ''Twice Upon a Time'' features a "Previously on Doctor Who..." sequence saying "709 Episodes ago" and showing footage from ''[[The Tenth Planet (TV story)|The Tenth Planet]]'' with [[William Hartnell]], [[Anneke Wills]] and [[Michael Craze]] as the [[First Doctor]], [[Polly Wright]] and [[Ben Jackson]] respectively. This scene makes use of two [[aspect ratio]]s. The footage reframes from 4:3 black-and-white to 16:9 colour, slowly morphing Hartnell into [[David Bradley]], and [[Lily Travers]] and [[Jared Garfield]] then appear as Polly and Ben, re-enacting missing segments on [[Snowcap]] from said episode. Following the First Doctor's return to his TARDIS, the episode briefly goes back to 4:3 black-and-white after Bradley's Doctor is seen lying on the floor unconscious, cutting to the original regeneration from Hartnell into Troughton, and visually bookending the First Doctor's involvement in the narrative.
*''Twice Upon a Time'' features a "Previously on Doctor Who..." sequence saying "709 Episodes ago" and showing footage from ''[[The Tenth Planet (TV story)|The Tenth Planet]]'' with [[William Hartnell]], [[Anneke Wills]] and [[Michael Craze]] as the [[First Doctor]], [[Polly Wright]] and [[Ben Jackson]] respectively. This scene makes use of two [[aspect ratio]]s. The footage reframes from 4:3 black-and-white to 16:9 colour, slowly morphing Hartnell into [[David Bradley]], and [[Lily Travers]] and [[Jared Garfield]] then appear as Polly and Ben, re-enacting missing segments on [[Snowcap]] from said episode. Following the First Doctor's return to his TARDIS, the episode briefly goes back to 4:3 black-and-white after Bradley's Doctor is seen lying on the floor unconscious, cutting to the original regeneration from Hartnell into Troughton, and visually bookending the First Doctor's involvement in the narrative.
* This story features a rare instance in which actors that only appeared through use of archive footage were also credited. Another notable instance of this happening is ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]''. William Hartnell's credit has been changed from "Dr. Who" to "The Doctor."
*This story features a rare instance in which actors that only appeared through use of archive footage were also credited. Another notable instance of this happening is ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]''. William Hartnell's credit has been changed from "Dr. Who" to "The Doctor."
* [[Rachel Talalay]] had actually shot a number of scenes from ''The Tenth Planet'', with a complete set reconstruction, recast characters, and the series 10 Mondasian Cybermen. She said in an interview that she tried to make both the set, and the cinematography, as accurate to the original scenes, and original production values, as much as possible. She did admit to having fun with some parts of the set in particular, and embellishing with a "60s feel", and noted that some details of the action had to be invented. These scene recreations were not used in the final edit of ''Twice Upon a Time''; the original footage was used in its place. However, these specially shot re-tellings were shown in the cinema feature ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]''.<ref name="TUAT">[[DOC]]: ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]''</ref>
*[[Rachel Talalay]] had actually shot a number of scenes from ''The Tenth Planet'', with a complete set reconstruction, recast characters, and the series 10 Mondasian Cybermen. She said in an interview that she tried to make both the set, and the cinematography, as accurate to the original scenes, and original production values, as much as possible. She did admit to having fun with some parts of the set in particular, and embellishing with a "60s feel", and noted that some details of the action had to be invented. These scene recreations were not used in the final edit of ''Twice Upon a Time''; the original footage was used in its place. However, these specially shot re-tellings were shown in the cinema feature ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]''.<ref name="TUAT">[[DOC]]: ''[[Twice Upon a Time (documentary)|Twice Upon a Time]]''</ref>
* The First and Twelfth Doctors meeting also features the scene acted out differently in [[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'' and ''Twice Upon a Time'', similar to how episodes in the 60s reshooting the prior scene's [[cliffhanger]], often resulting in little differences. The same situation also occurred when [[TV]]: ''[[The Runaway Bride (TV story)|The Runaway Bride]]'' followed the ''[[Doomsday (TV story)|Doomsday]]'' [[cliffhanger]] [[2006 (releases)|11 years prior]].
* The First and Twelfth Doctors meeting also features the scene acted out differently in [[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'' and ''Twice Upon a Time'', similar to how episodes in the 60s reshooting the prior scene's [[cliffhanger]], often resulting in little differences. The same situation also occurred when [[TV]]: ''[[The Runaway Bride (TV story)|The Runaway Bride]]'' followed the ''[[Doomsday (TV story)|Doomsday]]'' [[cliffhanger]] [[2006 (releases)|11 years prior]].
* The recreated Hartnell [[TARDIS control room|TARDIS interior]] set actually included props from the original set in the 1960s. As told by [[Mark Gatiss]], these included the [[brass pillar]]s, which are indeed the brass pillars from way back in 1963. Other aspects of the set were recreated.<ref name="TUAT" />
* The recreated Hartnell [[TARDIS control room|TARDIS interior]] set actually included props from the original set in the 1960s. As told by [[Mark Gatiss]], these included the [[brass pillar]]s, which are indeed the brass pillars from way back in 1963. Other aspects of the set were recreated.<ref name="TUAT" />
* The [[Twelfth Doctor]]'s [[regeneration]] has a new visual effect, and even sound effect, to those used previously in the [[BBC Wales]] series. Resembling slow travelling, elongated golden [[lightning]]. It is the first regeneration for the Doctor, since the [[Seventh Doctor]]'s [[Doctor Who (TV story)|in 1996]], to use an effect which is visually distinct from that seen in ''[[The Parting of the Ways (TV story)|The Parting of the Ways]]'', with the [[Ninth Doctor]] up to ''[[The Doctor Falls]]''.
* The [[Twelfth Doctor]]'s [[regeneration]] has a new visual effect, and even sound effect, to those used previously in the [[BBC Wales]] series. Resembling slow travelling, elongated golden [[lightning]]. It is the first regeneration for the Doctor, since the [[Seventh Doctor]]'s [[Doctor Who (TV story)|in 1996]], to use an effect which is visually distinct from that seen in ''[[The Parting of the Ways (TV story)|The Parting of the Ways]]'', with the [[Ninth Doctor]] up to ''[[The Doctor Falls]]''.
* [[Toby Whithouse]], with his performance here as the [[German soldier (Twice Upon a Time)|German soldier]], is the fifth person to have both written for and acted in ''Doctor Who''. The others being [[Victor Pemberton]], [[Derrick Sherwin]], [[Glyn Jones]] and [[Mark Gatiss]]. Though Whithouse and Gatiss are the only two who have written and acted in the revived series and are the only two to have written multiple stories. Gatiss and Whithouse were the most prolific writers during Steven Moffat's time as showrunner after Moffat himself.
*[[Toby Whithouse]], with his performance here as the [[German soldier (Twice Upon a Time)|German soldier]], is the fifth person to have both written for and acted in ''Doctor Who''. The others being [[Victor Pemberton]], [[Derrick Sherwin]], [[Glyn Jones]] and [[Mark Gatiss]]. Though Whithouse and Gatiss are the only two who have written and acted in the revived series and are the only two to have written multiple stories. Gatiss and Whithouse were the most prolific writers during Steven Moffat's time as showrunner after Moffat himself.
* [[Mark Hedges]], [[1st assistant director]], last worked on a [[DWU]] programme on ''[[Invasion of the Bane (TV story)|Invasion of the Bane]]'', the very first episode of ''[[The Sarah Jane Adventures]]'' in 2007. [[Gareth Meirion Thomas]], [[sound recordist]], last worked on ''[[Series 4 (Torchwood)|Torchwood: Miracle Day]]'' in 2011. This was the first, and {{as of|2018|alt=so far}} only, ''Doctor Who'' credit for both crew members.
*[[Mark Hedges]], [[1st assistant director]], last worked on a [[DWU]] programme on ''[[Invasion of the Bane (TV story)|Invasion of the Bane]]'', the very first episode of ''[[The Sarah Jane Adventures]]'' in 2007. [[Gareth Meirion Thomas]], [[sound recordist]], last worked on ''[[Series 4 (Torchwood)|Torchwood: Miracle Day]]'' in 2011. This was the first, and {{as of|2018|alt=so far}} only, ''Doctor Who'' credit for both crew members.
* This is the third consecutive regeneration story to include the word "time" in the title, following ''[[The End of Time (TV story)|The End of Time]]'' and ''[[The Time of the Doctor (TV story)|The Time of the Doctor]]''.
*This is the third consecutive regeneration story to include the word "time" in the title, following ''[[The End of Time (TV story)|The End of Time]]'' and ''[[The Time of the Doctor (TV story)|The Time of the Doctor]]''.
* [[Nikki Amuka-Bird]] is credited as "Helen Clay" on-screen, and as "The Glass Woman" in ''Radio Times''.
*[[Nikki Amuka-Bird]] is credited as "Helen Clay" on-screen, and as "The Glass Woman" in ''Radio Times''.
* When Bill's [[glass avatar]] and the Doctor talk and she restores his memories of [[Clara Oswald]], the music from ''[[The Husbands of River Song (TV story)|The Husbands of River Song]]'' when the Doctor and River were on a date before the [[Singing Towers]] of [[Darillium]] plays.
*When Bill's [[glass avatar]] and the Doctor talk and she restores his memories of [[Clara Oswald]], the music from ''[[The Husbands of River Song (TV story)|The Husbands of River Song]]'' when the Doctor and River were on a date before the [[Singing Towers]] of [[Darillium]] plays.
* On the last day of filming, [[Mark Gatiss]] brought in the jacket that [[Jon Pertwee]] wore in [[TV]]: ''[[Planet of the Daleks (TV story)|Planet of the Daleks]]''. It was featured hanging from a stand in the background in the [[Twelfth Doctor]]'s [[The Doctor's TARDIS|TARDIS]] during the regeneration scene.<ref name=":1">Doctor Who: The Fan Show – 2017 Christmas Special</ref> He also published a Behind the scenes picture of Capaldi wearing the jacket.<ref>[https://twitter.com/Markgatiss/status/946339442473750528 Peter Capaldi wearing Jon Pertwee's jacket from 'Planet of the Daleks']</ref>
*On the last day of filming, [[Mark Gatiss]] brought in the jacket that [[Jon Pertwee]] wore in [[TV]]: ''[[Planet of the Daleks (TV story)|Planet of the Daleks]]''. It was featured hanging from a stand in the background in the [[Twelfth Doctor]]'s [[The Doctor's TARDIS|TARDIS]] during the regeneration scene.<ref name=":1">Doctor Who: The Fan Show – 2017 Christmas Special</ref> He also published a Behind the scenes picture of Capaldi wearing the jacket.<ref>[https://twitter.com/Markgatiss/status/946339442473750528 Peter Capaldi wearing Jon Pertwee's jacket from 'Planet of the Daleks']</ref>
* Nardole having invisible [[hair]] was already jokingly stated by Steven Moffat in a BBC post-episode interview. There he also stated that Nardole was the only one able to see it through his glasses and that it was purple.<ref>Doctor Who: The Fan Show - The Aftershow Ep 1</ref> Matt Lucas had been aware of the invisible hair, but not the [[glass]] [[nipple]]s.<ref name="TUAT" />
*Nardole having invisible [[hair]] was already jokingly stated by Steven Moffat in a BBC post-episode interview. There he also stated that Nardole was the only one able to see it through his glasses and that it was purple.<ref>Doctor Who: The Fan Show - The Aftershow Ep 1</ref> Matt Lucas had been aware of the invisible hair, but not the [[glass]] [[nipple]]s.<ref name="TUAT" />
* The Twelfth Doctor's final lines about his name and how humans would understand it are directly taken from a theory Capaldi stated at a press screening interview of ''The Pilot''.<ref name=":1">Doctor Who: The Fan Show – 2017 Christmas Special</ref>
* The Twelfth Doctor's final lines about his name and how humans would understand it are directly taken from a theory Capaldi stated at a press screening interview of ''The Pilot''.<ref name=":1">Doctor Who: The Fan Show – 2017 Christmas Special</ref>
* The Twelfth Doctor's line "never, ever eat pears" is a tweaked version of the one in a hidden scene in [[TV]]: ''[[Human Nature (TV story)|Human Nature]]'' by the [[Tenth Doctor]]. It was also said in [[TV]]: ''[[Hell Bent (TV story)|Hell Bent]]'' by the Twelfth Doctor.
* The Twelfth Doctor's line "never, ever eat pears" is a tweaked version of the one in a hidden scene in [[TV]]: ''[[Human Nature (TV story)|Human Nature]]'' by the [[Tenth Doctor]]. It was also said in [[TV]]: ''[[Hell Bent (TV story)|Hell Bent]]'' by the Twelfth Doctor.
* This is the first regeneration story in the revived series without any direct connections to the [[Last Great Time War]].
*This is the first regeneration story in the revived series without any direct connections to the [[Last Great Time War]].
* Jenna Coleman's appearance had to be recorded separately as she was too busy working on ''Victoria''. She shot her scene in front of a green screen at the ''Top Gear ''office.<ref>http://www.radiotimes.com/news/tv/2018-01-19/jenna-colemans-surprise-doctor-who-return-was-almost-completely-different/</ref>
*Jenna Coleman's appearance had to be recorded separately as she was too busy working on ''Victoria''. She shot her scene in front of a green screen at the ''Top Gear ''office.<ref>http://www.radiotimes.com/news/tv/2018-01-19/jenna-colemans-surprise-doctor-who-return-was-almost-completely-different/</ref>
* For the First Doctor's TARDIS, the wall with photographs of roundels was replaced with the wall behind the Curator from ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]''.<ref>[http://www.radiotimes.com/news/tv/2018-04-21/doctor-who-production-team-confirm-subtle-tom-baker-easter-egg-in-peter-capaldis-last-episode/ Doctor Who production team confirm subtle Tom Baker Easter Egg in Peter Capaldi’s last episode]
* For the First Doctor's TARDIS, the wall with photographs of roundels was replaced with the wall behind the Curator from ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]''.<ref>[http://www.radiotimes.com/news/tv/2018-04-21/doctor-who-production-team-confirm-subtle-tom-baker-easter-egg-in-peter-capaldis-last-episode/ Doctor Who production team confirm subtle Tom Baker Easter Egg in Peter Capaldi’s last episode]
</ref>
</ref>
* When the Doctor's ring falls off her finger, only the secondary band of the ring was in the shot. This was because the first band of the ring was Peter Capaldi's wedding ring.
*When the Doctor's ring falls off her finger, only the secondary band of the ring was in the shot. This was because the first band of the ring was Peter Capaldi's wedding ring.
* This is the first multi-Doctor story to explicitly take place during a previously broadcast TV story from the earlier Doctor's perspective, though footage from the unbroadcast serial ''[[Shada (TV story)|Shada]]'' was used in [[TV]]: ''[[The Five Doctors (TV story)|The Five Doctors]]''.
*This is the first multi-Doctor story to explicitly take place during a previously broadcast TV story from the earlier Doctor's perspective, though footage from the unbroadcast serial ''[[Shada (TV story)|Shada]]'' was used in [[TV]]: ''[[The Five Doctors (TV story)|The Five Doctors]]''.
* This was the last episode contributed to by [[production designer]] [[Michael Pickwoad]] before the announcement of his death in [[August (people)|August]] [[2018 (people)|2018]].
*This was the last episode contributed to by [[production designer]] [[Michael Pickwoad]] before the announcement of his death in [[August (people)|August]] [[2018 (people)|2018]].
* This was originally intended to be the Thirteenth Doctor's first full episode. The Twelfth Doctor's regeneration was meant to finish in [[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'' but Chibnall wanted to start his run with Series 11 after Christmas, so Moffat convinced Peter Capaldi to do the Christmas special.{{fact}}
*This was originally intended to be the Thirteenth Doctor's first full episode. The Twelfth Doctor's regeneration was meant to finish in [[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'' but Chibnall wanted to start his run with Series 11 after Christmas, so Moffat convinced Peter Capaldi to do the Christmas special.{{fact}}
** Despite so, Chibnall did not use the Christmas slot the subsequent year, opting for a new-years special instead.<ref>See [[TV]]: ''[[Resolution (TV story)|Resolution]]''</ref>
**Despite so, Chibnall did not use the Christmas slot the subsequent year, opting for a new-years special instead.<ref>See [[TV]]: ''[[Resolution (TV story)|Resolution]]''</ref>
* Moffat wondered how the First Doctor's clothes fit on the Second Doctor post-regeneration.{{fact}}
*Moffat wondered how the First Doctor's clothes fit on the Second Doctor post-regeneration.{{fact}}  
**In ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'', it is shown that the Doctor's outfit somehow changed, suggesting that the Doctor is capable of involuntarily regenerating his clothes.
**In ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'', it is shown that the Doctor's outfit somehow changed, suggesting that the Doctor is capable of involuntarily regenerating his clothes.


=== Ratings ===
===Ratings ===
* 5.70 million (UK overnight)<ref>[http://www.doctorwhotv.co.uk/christmas-day-2017-ratings-top-10-86691.htm Ratings; DoctorWho TV]</ref>
*5.70 million (UK overnight)<ref>[http://www.doctorwhotv.co.uk/christmas-day-2017-ratings-top-10-86691.htm Ratings; DoctorWho TV]</ref>
* 7.92 million (UK final) <ref>[http://www.doctorwhonews.net/2018/01/twice-upon-time-official-rating.html UK Ratings; DW News]</ref>
*7.92 million (UK final) <ref>[http://www.doctorwhonews.net/2018/01/twice-upon-time-official-rating.html UK Ratings; DW News]</ref>
* 1.15 million (BBC America overnight)<ref>[http://www.showbuzzdaily.com/articles/showbuzzdailys-top-150-monday-cable-originals-network-finals-12-25-2017.html BBC America Ratings]</ref>
*1.15 million (BBC America overnight)<ref>[http://www.showbuzzdaily.com/articles/showbuzzdailys-top-150-monday-cable-originals-network-finals-12-25-2017.html BBC America Ratings]</ref>
* 2.2 million (BBC America final)<ref>[http://www.bbcwpressroom.com/bbca/press/farewell-twelfth-doctor-bbc-america-brings-record-setting-viewership-social-engagement-christmas-day/ BBC America Ratings Final]</ref>
* 2.2 million (BBC America final)<ref>[http://www.bbcwpressroom.com/bbca/press/farewell-twelfth-doctor-bbc-america-brings-record-setting-viewership-social-engagement-christmas-day/ BBC America Ratings Final]</ref>


=== Filming locations ===
===Filming locations ===
''to be added''
''to be added''


=== Production errors ===
===Production errors ===
{{Discontinuity}}
{{Discontinuity}}
* Bill's shirt changes constantly throughout the entire episode, from the rainbow shirt that was seen in ''Smile'', to a new shirt which we have not seen before.
*Bill's shirt changes constantly throughout the entire episode, from the rainbow shirt that was seen in ''Smile'', to a new shirt which we have not seen before.
** However, this could be attributed to the fact that this version of Bill is a collection of her memories and not her physical self.
**However, this could be attributed to the fact that this version of Bill is a collection of her memories and not her physical self.
* Nikki Amuka-Bird fluffs a line: “Step out of the caps-ul.” She should have said “Cap-sule.”
*Nikki Amuka-Bird fluffs a line: “Step out of the caps-ul.” She should have said “Cap-sule.”
* When examining the glass woman, the Twelfth Doctor’s right hand is in line with his waist. Next shot and his hand is down his side. In the next shot, his left hand is next to his waist.
*When examining the glass woman, the Twelfth Doctor’s right hand is in line with his waist. Next shot and his hand is down his side. In the next shot, his left hand is next to his waist.
* When the Captain is taken from the World War One battlefield he has his revolver in his hand. After he falls to the ground at the South Pole, the gun is in his holster and he has to draw it again.
*When the Captain is taken from the World War One battlefield he has his revolver in his hand. After he falls to the ground at the South Pole, the gun is in his holster and he has to draw it again.
* A few times throughout the episode, the doors of the first Doctor's TARDIS open as he approaches them even though he didn't operate the door control on the console.
*A few times throughout the episode, the doors of the first Doctor's TARDIS open as he approaches them even though he didn't operate the door control on the console.
* After the Captain requests a favour from the Doctors, the First Doctor can be heard saying "Oh, anything. Name it," but his mouth is not actually moving after the word "oh."
*After the Captain requests a favour from the Doctors, the First Doctor can be heard saying "Oh, anything. Name it," but his mouth is not actually moving after the word "oh."
* In the Christmas scene on the [[battlefield]], fire is seen in several places. In the shots where objects are in front of the fire, the smoke is seen to rise ''in front'' of the object, despite the fire being behind.
*In the Christmas scene on the [[battlefield]], fire is seen in several places. In the shots where objects are in front of the fire, the smoke is seen to rise ''in front'' of the object, despite the fire being behind.
* When the medics run with the stretcher, it is brown and has a large stain on it. But when the soldier is on it, it changes to black.
*When the medics run with the stretcher, it is brown and has a large stain on it. But when the soldier is on it, it changes to black.
* During the scene in which the soldiers are playing football, the shot is flipped. This is visible due to the soldier's uniforms.
*During the scene in which the soldiers are playing football, the shot is flipped. This is visible due to the soldier's uniforms.
* Before stepping in to the TARDIS to regenerate, the Doctor is seen wearing black and blue running shoes. In the next shot where he's in the TARDIS, he is wearing his usual black boots.
*Before stepping in to the TARDIS to regenerate, the Doctor is seen wearing black and blue running shoes. In the next shot where he's in the TARDIS, he is wearing his usual black boots.
*In the original episode of ''The Tenth Planet'', the First Doctor regenerates with Ben and Polly at his side. In this episode, he regenerates alone.
*In the original episode of ''The Tenth Planet'', the First Doctor regenerates with Ben and Polly at his side. In this episode, he regenerates alone.
* The Twelfth Doctor begins regeneration with his back to the stairs, but immediately following regeneration, the Thirteenth Doctor is standing at a different angle and is further away from the stairs.
* The Twelfth Doctor begins regeneration with his back to the stairs, but immediately following regeneration, the Thirteenth Doctor is standing at a different angle and is further away from the stairs.
* When the Doctor catches herself from falling through the TARDIS doors with her foot, her boot briefly changes to a different shoe.
*When the Doctor catches herself from falling through the TARDIS doors with her foot, her boot briefly changes to a different shoe.
* In the shot where the Doctor falls through the TARDIS doors, the bottom-right section of wall has clearly been digitally extended on the last frame.
*In the shot where the Doctor falls through the TARDIS doors, the bottom-right section of wall has clearly been digitally extended on the last frame.


=== Myths ===
===Myths ===
* The Twelfth Doctor would be killed. ''The Twelfth Doctor was killed in the [[The Doctor Falls (TV story)|previous story]], he just refused to regenerate then.''
* The Twelfth Doctor would be killed. ''The Twelfth Doctor was killed in the [[The Doctor Falls (TV story)|previous story]], he just refused to regenerate then.''
* Because the opening was set in the events of ''The Tenth Planet'', [[Cybermen]] would appear. ''Although this was technically true, they only appeared through the use of archival footage from said story.''
*Because the opening was set in the events of ''The Tenth Planet'', [[Cybermen]] would appear. ''Although this was technically true, they only appeared through the use of archival footage from said story.''  
** A full recreation of several scenes were originally filmed for this purpose.
**A full recreation of several scenes were originally filmed for this purpose.
* [[Carole Ann Ford]] would return as [[Susan Foreman]]. ''This was proven false.''
*[[Carole Ann Ford]] would return as [[Susan Foreman]]. ''This was proven false.''
* The Captain would turn out to be Gilbert MacKenzie-Trench, the man who created the iconic police box design. ''The Captain was revealed to be [[Archibald Hamish Lethbridge-Stewart]], an ancestor of [[Alistair Gordon Lethbridge-Stewart|the Brigadier]].''
* The Captain would turn out to be Gilbert MacKenzie-Trench, the man who created the iconic police box design. ''The Captain was revealed to be [[Archibald Hamish Lethbridge-Stewart]], an ancestor of [[Alistair Gordon Lethbridge-Stewart|the Brigadier]].''
* The Doctor would regenerate while falling. ''The Doctor fell out of the TARDIS after regenerating instead.''
* The Doctor would regenerate while falling. ''The Doctor fell out of the TARDIS after regenerating instead.''
* According to the ''[[Daily Mirror]]'', this story would see the last day of the [[Time War]] from the perspective of the [[First Doctor]] and the [[Twelfth Doctor]]. ''This was proven false.''
*According to the ''[[Daily Mirror]]'', this story would see the last day of the [[Time War]] from the perspective of the [[First Doctor]] and the [[Twelfth Doctor]]. ''This was proven false.''
* [[Matt Smith]] would return as the [[Eleventh Doctor]]. ''This was proven false, although archive footage was used of all of the Doctor's incarnations up to the Twelfth by the Testimony to prove to the First Doctor that the Twelfth Doctor was indeed his future incarnation.''
*[[Matt Smith]] would return as the [[Eleventh Doctor]]. ''This was proven false, although archive footage was used of all of the Doctor's incarnations up to the Twelfth by the Testimony to prove to the First Doctor that the Twelfth Doctor was indeed his future incarnation.''
*The videotape prop of "The Daleks' Master Plan 1-12" was a real domestic videotape recording of all twelve episodes loaned to the crew by a film collector. ''While it is possible missing episodes could exist on off-air videotape cassette recordings, this simply isn't the case. It is highly unlikely a private collector would loan such a rare item without realising the BBC would most likely return it to their archives and make it publicly available. Furthermore, a domestic tape of 1965/66 quality could not contain more than roughly 120-160 minutes, while all twelve episodes are a total of 300 minutes.''
*The videotape prop of "The Daleks' Master Plan 1-12" was a real domestic videotape recording of all twelve episodes loaned to the crew by a film collector. ''While it is possible missing episodes could exist on off-air videotape cassette recordings, this simply isn't the case. It is highly unlikely a private collector would loan such a rare item without realising the BBC would most likely return it to their archives and make it publicly available. Furthermore, a domestic tape of 1965/66 quality could not contain more than roughly 120-160 minutes, while all twelve episodes are a total of 300 minutes.''


== Continuity ==
==Continuity==
* The Twelfth Doctor mentions Bill's [[Cyber-conversion]], ([[TV]]: ''[[World Enough and Time (TV story)|World Enough and Time]]'') and Bill explains how [[Heather (The Pilot)|Heather]] saved her, though she has difficulty remembering the details. ([[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'') Bill has to remind the Twelfth Doctor about [[Heather (The Pilot)|Heather]] and the [[sentient oil]]. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')
* The Twelfth Doctor mentions Bill's [[Cyber-conversion]], ([[TV]]: ''[[World Enough and Time (TV story)|World Enough and Time]]'') and Bill explains how [[Heather (The Pilot)|Heather]] saved her, though she has difficulty remembering the details. ([[TV]]: ''[[The Doctor Falls (TV story)|The Doctor Falls]]'') Bill has to remind the Twelfth Doctor about [[Heather (The Pilot)|Heather]] and the [[sentient oil]]. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')
* When time freezes following the meeting of the Twelfth and First Doctors, the Twelfth theorises that it is their temporally-paradoxical meeting which has caused this effect — much as when time was similarly frozen when the [[Eighth Doctor]] encountered the First Doctor. ([[PROSE]]: ''[[The Eight Doctors (novel)|The Eight Doctors]]'')
*When time freezes following the meeting of the Twelfth and First Doctors, the Twelfth theorises that it is their temporally-paradoxical meeting which has caused this effect — much as when time was similarly frozen when the [[Eighth Doctor]] encountered the First Doctor. ([[PROSE]]: ''[[The Eight Doctors (novel)|The Eight Doctors]]'')
* The Twelfth Doctor declares everyone is important. The [[Eleventh Doctor]] thought so too. ([[TV]]: ''[[A Christmas Carol (TV story)|A Christmas Carol]]'') The [[Ninth Doctor]] previously claimed an "ordinary man" was the most important thing in creation, and expressed shock when [[Sarah Clark|someone]] said they weren't important. ([[TV]]: ''[[Father's Day (TV story)|Father's Day]]'')
* The Twelfth Doctor declares everyone is important. The [[Eleventh Doctor]] thought so too. ([[TV]]: ''[[A Christmas Carol (TV story)|A Christmas Carol]]'') The [[Ninth Doctor]] previously claimed an "ordinary man" was the most important thing in creation, and expressed shock when [[Sarah Clark|someone]] said they weren't important. ([[TV]]: ''[[Father's Day (TV story)|Father's Day]]'')
* The Twelfth Doctor nearly encountered his first incarnation when the TARDIS was accidentally transported to the barn on Gallifrey where his first incarnation was hiding as a child. However, the Twelfth Doctor was unconscious at the time and left without going outside to meet his younger self. ([[TV]]: ''[[Listen (TV story)|Listen]]'')
* The Twelfth Doctor nearly encountered his first incarnation when the TARDIS was accidentally transported to the barn on Gallifrey where his first incarnation was hiding as a child. However, the Twelfth Doctor was unconscious at the time and left without going outside to meet his younger self. ([[TV]]: ''[[Listen (TV story)|Listen]]'')
Line 674: Line 674:
* The Doctor was present for the Christmas truce of 1914 earlier in his first incarnation ([[PROSE]]: ''[[The Little Drummer Boy (short story)|The Little Drummer Boy]]'') as well as during his [[Fifth Doctor|fifth]] ([[PROSE]]: ''[[Never Seen Cairo (short story)|Never Seen Cairo]]'') and [[Ninth Doctor|ninth incarnations]]. ([[COMIC]]: ''[[The Forgotten (comic story)|The Forgotten]]'')
* The Doctor was present for the Christmas truce of 1914 earlier in his first incarnation ([[PROSE]]: ''[[The Little Drummer Boy (short story)|The Little Drummer Boy]]'') as well as during his [[Fifth Doctor|fifth]] ([[PROSE]]: ''[[Never Seen Cairo (short story)|Never Seen Cairo]]'') and [[Ninth Doctor|ninth incarnations]]. ([[COMIC]]: ''[[The Forgotten (comic story)|The Forgotten]]'')
* The Twelfth Doctor goes to the abandoned weapon forges of [[Villengard]], to find an old ally. The [[War Doctor]] had previously visited Villengard, when he caused the main [[reactor]] to go critical and vaporise everything, ([[COMIC]]: ''[[The Whole Thing's Bananas (comic story)|The Whole Thing's Bananas]]'') an adventure he later recounted to Captain [[Jack Harkness]]. Jack's [[sonic blaster]] was made there. ([[TV]]: ''[[The Doctor Dances (TV story)|The Doctor Dances]]'')
* The Twelfth Doctor goes to the abandoned weapon forges of [[Villengard]], to find an old ally. The [[War Doctor]] had previously visited Villengard, when he caused the main [[reactor]] to go critical and vaporise everything, ([[COMIC]]: ''[[The Whole Thing's Bananas (comic story)|The Whole Thing's Bananas]]'') an adventure he later recounted to Captain [[Jack Harkness]]. Jack's [[sonic blaster]] was made there. ([[TV]]: ''[[The Doctor Dances (TV story)|The Doctor Dances]]'')
* Villengard was once called the nightmare of the [[Seven Galaxies]], a Kaled concept that believed only Skaro could have intelligent life forms in the seven galaxies. ([[TV]]: ''[[Genesis of the Daleks (TV story)|Genesis of the Daleks]]'')
*Villengard was once called the nightmare of the [[Seven Galaxies]], a Kaled concept that believed only Skaro could have intelligent life forms in the seven galaxies. ([[TV]]: ''[[Genesis of the Daleks (TV story)|Genesis of the Daleks]]'')
* Villengard is at the centre of the universe, where [[Terminus]] was when the Fifth Doctor visited the area. ([[TV]]: ''[[Terminus (TV story)|Terminus]]'')
*Villengard is at the centre of the universe, where [[Terminus]] was when the Fifth Doctor visited the area. ([[TV]]: ''[[Terminus (TV story)|Terminus]]'')
* The First Doctor recognises what the Twelfth Doctor knows to be a [[Dalek mutant]] on Villengard, having encountered such mutations on his first visit to [[Skaro]]. ([[TV]]: ''[[The Daleks (TV story)|The Daleks]]'')
* The First Doctor recognises what the Twelfth Doctor knows to be a [[Dalek mutant]] on Villengard, having encountered such mutations on his first visit to [[Skaro]]. ([[TV]]: ''[[The Daleks (TV story)|The Daleks]]'')
* The First Doctor explains why he ran away from Gallifrey, ([[TV]]: ''[[Heaven Sent (TV story)|Heaven Sent]]'') mentioning many "pressing reasons" as the [[Fourth Doctor]] did to [[Adric]]. ([[TV]]: ''[[Logopolis (TV story)|Logopolis]]'')
* The First Doctor explains why he ran away from Gallifrey, ([[TV]]: ''[[Heaven Sent (TV story)|Heaven Sent]]'') mentioning many "pressing reasons" as the [[Fourth Doctor]] did to [[Adric]]. ([[TV]]: ''[[Logopolis (TV story)|Logopolis]]'')
* The Twelfth Doctor meets Rusty again. Rusty calls the Twelfth Doctor a "good Dalek", as he did before. ([[TV]]: ''[[Into the Dalek (TV story)|Into the Dalek]]'')
* The Twelfth Doctor meets Rusty again. Rusty calls the Twelfth Doctor a "good Dalek", as he did before. ([[TV]]: ''[[Into the Dalek (TV story)|Into the Dalek]]'')
* The Doctor mentions that Earth is a "[[level 5 planet|level 5 civilisation]]". ([[TV]]: ''[[City of Death (TV story)|City of Death]]'', ''[[Voyage of the Damned (TV story)|Voyage of the Damned]]'', ''[[The Eleventh Hour (TV story)|The Eleventh Hour]]'')
* The Doctor mentions that Earth is a "[[level 5 planet|level 5 civilisation]]". ([[TV]]: ''[[City of Death (TV story)|City of Death]]'', ''[[Voyage of the Damned (TV story)|Voyage of the Damned]]'', ''[[The Eleventh Hour (TV story)|The Eleventh Hour]]'')
* As Bill, the Doctor and Nardole hug, the latter says "cuddle". He previously said this when hugging the Doctor and Bill. ([[TV]]: ''[[Oxygen (TV story)|Oxygen]]'')
*As Bill, the Doctor and Nardole hug, the latter says "cuddle". He previously said this when hugging the Doctor and Bill. ([[TV]]: ''[[Oxygen (TV story)|Oxygen]]'')
* [[Helen Clay]] is from [[New Earth (New Earth)|New Earth]]. She founded the [[Testimony Foundation]] in [[5000000012|5,000,000,012]], just a few years before the [[Tenth Doctor]] and [[Rose Tyler|Rose]] first [[5000000023|visited]]. ([[TV]]: ''[[New Earth (TV story)|New Earth]]'')
*[[Helen Clay]] is from [[New Earth (New Earth)|New Earth]]. She founded the [[Testimony Foundation]] in [[5000000012|5,000,000,012]], just a few years before the [[Tenth Doctor]] and [[Rose Tyler|Rose]] first [[5000000023|visited]]. ([[TV]]: ''[[New Earth (TV story)|New Earth]]'')
* The First Doctor remarks on how dusty and dirty the Twelfth Doctor's TARDIS is. [[Wilfred Mott]] once said similar regarding the Tenth Doctor's TARDIS, specifically that he felt it should be cleaner. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* The First Doctor remarks on how dusty and dirty the Twelfth Doctor's TARDIS is. [[Wilfred Mott]] once said similar regarding the Tenth Doctor's TARDIS, specifically that he felt it should be cleaner. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* The Twelfth Doctor repeats [[River Song]]'s favourite phrase of "spoilers" to the Captain and his predecessor. The Tenth and Eleventh Doctors also employed this phrase. ([[TV]]: ''[[Silence in the Library (TV story)|Silence in the Library]]'', ''[[Let's Kill Hitler (TV story)|Let's Kill Hitler]]'', ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]'') After the [[First Doctor]] is surprised to learn that Earth is defended, he calls the First Doctor "early days," the same phrase used by River to refer to the [[Tenth Doctor]]. ([[TV]]: ''[[Silence in the Library (TV story)|Silence in the Library]]'')
* The Twelfth Doctor repeats [[River Song]]'s favourite phrase of "spoilers" to the Captain and his predecessor. The Tenth and Eleventh Doctors also employed this phrase. ([[TV]]: ''[[Silence in the Library (TV story)|Silence in the Library]]'', ''[[Let's Kill Hitler (TV story)|Let's Kill Hitler]]'', ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]'') After the [[First Doctor]] is surprised to learn that Earth is defended, he calls the First Doctor "early days," the same phrase used by River to refer to the [[Tenth Doctor]]. ([[TV]]: ''[[Silence in the Library (TV story)|Silence in the Library]]'')
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* The Twelfth Doctor mentions the Daleks' [[Pathweb]]. ([[TV]]: ''[[Asylum of the Daleks (TV story)|Asylum of the Daleks]]'')
* The Twelfth Doctor mentions the Daleks' [[Pathweb]]. ([[TV]]: ''[[Asylum of the Daleks (TV story)|Asylum of the Daleks]]'')
* The Twelfth Doctor once more references River's words from [[River Song's diary|her diary]]. ([[TV]]: ''[[Extremis (TV story)|Extremis]]'', ''[[The Doctor Falls (TV story)|The Doctor Falls]]'')
* The Twelfth Doctor once more references River's words from [[River Song's diary|her diary]]. ([[TV]]: ''[[Extremis (TV story)|Extremis]]'', ''[[The Doctor Falls (TV story)|The Doctor Falls]]'')
* [[Regeneration energy]] has previously dealt severe damage to [[the Doctor's TARDIS]], leaving it in disarray for the successor. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
*[[Regeneration energy]] has previously dealt severe damage to [[the Doctor's TARDIS]], leaving it in disarray for the successor. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* The Twelfth Doctor mentions Bill's [[Christmas gift]] of a [[rug]]. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')
* The Twelfth Doctor mentions Bill's [[Christmas gift]] of a [[rug]]. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')
* The final shot of the Twelfth Doctor is a shot of his [[eye]]s and [[eyebrow]]s, echoing his first appearance. ([[TV]]: ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]'') His [[ring]] also falls to the ground shortly after regenerating, mirroring when his [[Eleventh Doctor|predecessor]]'s [[bow tie]] fell to the ground as he regenerated, ([[TV]]: ''[[The Time of the Doctor (TV story)|The Time of the Doctor]]'') and recalls how the First Doctor's [[The Doctor's signet ring|ring]] no longer fitted the [[Second Doctor]]'s finger, leading him to discard it. ([[TV]]: ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'')
* The final shot of the Twelfth Doctor is a shot of his [[eye]]s and [[eyebrow]]s, echoing his first appearance. ([[TV]]: ''[[The Day of the Doctor (TV story)|The Day of the Doctor]]'') His [[ring]] also falls to the ground shortly after regenerating, mirroring when his [[Eleventh Doctor|predecessor]]'s [[bow tie]] fell to the ground as he regenerated, ([[TV]]: ''[[The Time of the Doctor (TV story)|The Time of the Doctor]]'') and recalls how the First Doctor's [[The Doctor's signet ring|ring]] no longer fitted the [[Second Doctor]]'s finger, leading him to discard it. ([[TV]]: ''[[The Power of the Daleks (TV story)|The Power of the Daleks]]'')
Line 695: Line 695:
* The Twelfth Doctor recalls where the [[alcohol]] is stored in the TARDIS, having seen River access it. ([[TV]]: ''[[The Husbands of River Song (TV story)|The Husbands of River Song]]'')
* The Twelfth Doctor recalls where the [[alcohol]] is stored in the TARDIS, having seen River access it. ([[TV]]: ''[[The Husbands of River Song (TV story)|The Husbands of River Song]]'')
* The Thirteenth Doctor expresses delight when she sees her new reflection in the TARDIS view screen. The Twelfth Doctor previously expressed approval when Clara suggested he could become female. ([[TV]]: ''[[Death in Heaven (TV story)|Death in Heaven]]'') The Eleventh Doctor also expressed enjoyment at being a woman when he switched bodies with Amy Pond. The Doctor noted that "Time Lords don't really worry that much about what sex they are." ([[COMIC]]: ''[[Body Snatched (comic story)|Body Snatched]]'') He also mistakenly thought he had regenerated into a woman shortly after his own regeneration. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* The Thirteenth Doctor expresses delight when she sees her new reflection in the TARDIS view screen. The Twelfth Doctor previously expressed approval when Clara suggested he could become female. ([[TV]]: ''[[Death in Heaven (TV story)|Death in Heaven]]'') The Eleventh Doctor also expressed enjoyment at being a woman when he switched bodies with Amy Pond. The Doctor noted that "Time Lords don't really worry that much about what sex they are." ([[COMIC]]: ''[[Body Snatched (comic story)|Body Snatched]]'') He also mistakenly thought he had regenerated into a woman shortly after his own regeneration. ([[TV]]: ''[[The End of Time (TV story)|The End of Time]]'')
* Shortly before regenerating, the [[Twelfth Doctor]] salutes Captain [[Archibald Hamish Lethbridge-Stewart]], something that [[Alastair Lethbridge-Stewart|the Brigadier]] always wanted the Doctor to do. ([[TV]]: ''[[Death in Heaven (TV story)|Death in Heaven]]'')
*Shortly before regenerating, the [[Twelfth Doctor]] salutes Captain [[Archibald Hamish Lethbridge-Stewart]], something that [[Alastair Lethbridge-Stewart|the Brigadier]] always wanted the Doctor to do. ([[TV]]: ''[[Death in Heaven (TV story)|Death in Heaven]]'')
* The [[glass avatar]] of [[Bill Potts]] mentions that the Doctor "serves at the pleasure of the human race". ([[TV]]: ''[[Thin Ice (TV story)|Thin Ice]]'')
* The [[glass avatar]] of [[Bill Potts]] mentions that the Doctor "serves at the pleasure of the human race". ([[TV]]: ''[[Thin Ice (TV story)|Thin Ice]]'')
* The First Doctor threatens Bill with a "jolly good smacked [[posterior|bottom]]". He previously told [[Susan Foreman]] she also deserved "a jolly good smacked bottom" after her clumsiness inconvenienced him. ([[TV]]: "[[World's End]]")
* The First Doctor threatens Bill with a "jolly good smacked [[posterior|bottom]]". He previously told [[Susan Foreman]] she also deserved "a jolly good smacked bottom" after her clumsiness inconvenienced him. ([[TV]]: "[[World's End]]")
* The Twelfth Doctor gets concerned when the First Doctor asks what [[browser history]] is. He previously warned [[Osgood]] and Bill not to look at his browsing history. ([[TV]]: ''[[The Zygon Inversion (TV story)|The Zygon Inversion]]'', ''[[Smile (TV story)|Smile]]'')
* The Twelfth Doctor gets concerned when the First Doctor asks what [[browser history]] is. He previously warned [[Osgood]] and Bill not to look at his browsing history. ([[TV]]: ''[[The Zygon Inversion (TV story)|The Zygon Inversion]]'', ''[[Smile (TV story)|Smile]]'')
* The Testimony storing the memories of the dead is similar to the [[APC Net]], ([[TV]]: ''[[The Deadly Assassin (TV story)|The Deadly Assassin]]'') and the [[Nethersphere]]. ([[TV]]: ''[[Dark Water (TV story)|Dark Water]]'')
* The Testimony storing the memories of the dead is similar to the [[APC Net]], ([[TV]]: ''[[The Deadly Assassin (TV story)|The Deadly Assassin]]'') and the [[Nethersphere]]. ([[TV]]: ''[[Dark Water (TV story)|Dark Water]]'')
* Bill knows that the Doctor has had different faces. ([[COMIC]]: ''[[The Lost Dimension (comic story)|The Lost Dimension]]'')
*Bill knows that the Doctor has had different faces. ([[COMIC]]: ''[[The Lost Dimension (comic story)|The Lost Dimension]]'')
* The Doctor regains his memories of Clara Oswald after seeing her glass avatar. ([[TV]]: ''[[Hell Bent (TV story)|Hell Bent]]'')
* The Doctor regains his memories of Clara Oswald after seeing her glass avatar. ([[TV]]: ''[[Hell Bent (TV story)|Hell Bent]]'')
* "Clara" is wearing the clothes she died in. ([[TV]]: ''[[Face the Raven (TV story)|Face the Raven]]'')
*"Clara" is wearing the clothes she died in. ([[TV]]: ''[[Face the Raven (TV story)|Face the Raven]]'')
* The First Doctor tells Bill how his belief that good will always prevail against evil was why he left Gallifrey in the first place. The Eighth Doctor also told Charley a similar sentiment. ([[AUDIO]]: ''[[The Stones of Venice (audio story)|The Stones of Venice]]'')
* The First Doctor tells Bill how his belief that good will always prevail against evil was why he left Gallifrey in the first place. The Eighth Doctor also told Charley a similar sentiment. ([[AUDIO]]: ''[[The Stones of Venice (audio story)|The Stones of Venice]]'')
* Clara Oswald had previously noted that the Doctor failed to fully understand the force for good that he is. ([[TV]]: ''[[The History of the Doctor (TV story)|The History of the Doctor]]'')
*Clara Oswald had previously noted that the Doctor failed to fully understand the force for good that he is. ([[TV]]: ''[[The History of the Doctor (TV story)|The History of the Doctor]]'')
* Bill’s glass avatar’s annoyance at the Twelfth Doctor for looking at her and not seeing Bill mirrors his annoyance at Clara for looking at him and not seeing the Eleventh Doctor. ([[TV]]: ''[[Deep Breath (TV story)|Deep Breath]]'')
*Bill’s glass avatar’s annoyance at the Twelfth Doctor for looking at her and not seeing Bill mirrors his annoyance at Clara for looking at him and not seeing the Eleventh Doctor. ([[TV]]: ''[[Deep Breath (TV story)|Deep Breath]]'')


== Home video releases ==
==Home video releases==
=== DVD releases ===
=== DVD releases ===
A stand-alone DVD was released on [[22 January (releases)|January 22nd]], [[2018 (releases)|2018]].
A stand-alone DVD was released on [[22 January (releases)|January 22nd]], [[2018 (releases)|2018]].


=== Blu-ray releases ===
===Blu-ray releases ===
A stand-alone Blu-ray was released on January 22nd, 2018 with special features including a recording of the Doctor Who panel at San Diego Comic-Con 2017.
A stand-alone Blu-ray was released on January 22nd, 2018 with special features including a recording of the Doctor Who panel at San Diego Comic-Con 2017.


=== 4K Ultra HD Blu-ray releases ===
===4K Ultra HD Blu-ray releases ===
This story was released on Ultra HD Blu-ray in the UK on [[24 September (releases)|September 24th]], 2018, the first ''Doctor Who'' story to be released on the format. The story was not shot in 4K and so was upscaled, however this release makes use of HDR colour depth not available on the DVD and Blu-ray releases. It contains the same special features as the standard Blu-ray release, which is also included as a separate second disc.
This story was released on Ultra HD Blu-ray in the UK on [[24 September (releases)|September 24th]], 2018, the first ''Doctor Who'' story to be released on the format. The story was not shot in 4K and so was upscaled, however this release makes use of HDR colour depth not available on the DVD and Blu-ray releases. It contains the same special features as the standard Blu-ray release, which is also included as a separate second disc.


The US release came on [[2 October (releases)|October 2nd]], 2018. It is notable for using the 2018 version of the logo on the cover art rather than the version used during Capaldi's tenure as the Doctor. The disc contents are identical to the UK release (including an FBI warning, included on the UK pressing of the disc).
The US release came on [[2 October (releases)|October 2nd]], 2018. It is notable for using the 2018 version of the logo on the cover art rather than the version used during Capaldi's tenure as the Doctor. The disc contents are identical to the UK release (including an FBI warning, included on the UK pressing of the disc).


=== Digital releases ===
===Digital releases ===
''to be added''
''to be added''


== External links ==
==External links==
{{bbc.co.uk|b09kkt1m}}
{{bbc.co.uk|b09kkt1m}}


== Footnotes ==
==Footnotes==
{{reflist}}
{{reflist}}
{{DWTV}}
{{DWTV}}
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