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{{Infobox Story | {{Infobox Story SMW | ||
|image= Virus Invisable.jpg | |image = Virus Invisable.jpg | ||
|series=[[Doctor Who television stories|''Doctor Who'' television stories]] | |series = [[Doctor Who television stories|''Doctor Who'' television stories]] | ||
|season number= Season 15 | |season number = Season 15 (Doctor Who 1963)| | ||
|season serial number = 2 | |season serial number = 2 | ||
|story number= 93 | |story number = 93 | ||
|doctor= Fourth Doctor | |doctor = Fourth Doctor | ||
|companions=[[Leela]] | |companions = [[Leela]] | ||
|enemy= [[The Swarm (The Invisible Enemy)| | |featuring = Marius | ||
|setting= [[Titan Base]], [[Bi-Al Foundation]], [[5000]] | |featuring2 = K9 Mark I | ||
|writer= | |enemy = [[The Nucleus]] of [[The Swarm (The Invisible Enemy)|the Swarm]] | ||
|director= [[Derrick Goodwin]] | |setting = [[Titan Base]], [[Bi-Al Foundation]], circa [[5000]] AD | ||
|producer= [[Graham Williams]] | |writer = Bob Baker, Dave Martin | ||
|novelisation=Doctor Who and the Invisible Enemy (novelisation) | |director = [[Derrick Goodwin]] | ||
|epcount=4 | |producer = [[Graham Williams]] | ||
|broadcast date= | |novelisation = Doctor Who and the Invisible Enemy (novelisation) | ||
|network= | |epcount = 4 | ||
|format= 4x25-minute episodes | |broadcast date = 1 - 22 October 1977 | ||
|serial production code= [[List of production codes|4T]] | |network = BBC1 | ||
|prev = Horror of Fang Rock (TV story) | |format = 4x25-minute episodes | ||
|next = Image of the Fendahl (TV story) | |serial production code = [[List of production codes|4T]] | ||
|made prev = The Talons of Weng-Chiang (TV story) | |prev = Horror of Fang Rock (TV story) | ||
|made next = Horror of Fang Rock (TV story) | |next = Image of the Fendahl (TV story) | ||
|made prev = The Talons of Weng-Chiang (TV story) | |||
|made next = Horror of Fang Rock (TV story) | |||
}} | }} | ||
'''''The Invisible Enemy''''' was the second serial of [[season 15]] of ''[[Doctor Who]]''. It saw the first appearance of [[K9 Mark I|K9]]. | {{You may|The Invisible Enemy (in-universe)|n1=its in-universe counterpart}} | ||
'''''The Invisible Enemy''''' was the second serial of [[Season 15 (Doctor Who 1963)|season 15]] of ''[[Doctor Who]]''. It saw the first appearance of [[K9 Mark I|K9]]. | |||
This story returned the Fourth Doctor and Leela to the original [[TARDIS console room]] from the beginning of [[season 14]], now with a considerably updated appearance, with the changes in its features and the fact the Doctor had reverted to using a different console room all this time being explained as a deliberate attempt to redecorate the console. During the production break between the [[1976 (production)|1976]] and [[1977 (production)|1977]] seasons, the newer, gothic-style TARDIS console set that had been designed to improve the comfort of camera crew's filming duties was put into storage. However, the wooden panelled walls of the set proved to be its greatest flaw when they warped out of shape while the prop was not being used. The damage was too extensive to repair, and the new set had to be discarded in favour of adopting a replacement based on the old console design. | This story returned the Fourth Doctor and Leela to the original [[TARDIS control room (The Invisible Enemy)|TARDIS console room]] from the beginning of [[Season 14 (Doctor Who 1963)|season 14]], now with a considerably updated appearance, with the changes in its features and the fact the Doctor had reverted to using a different console room all this time being explained as a deliberate attempt to redecorate the console. | ||
During the production break between the [[1976 (production)|1976]] and [[1977 (production)|1977]] seasons, the newer, gothic-style TARDIS console set that had been designed to improve the comfort of camera crew's filming duties was put into storage. However, the wooden panelled walls of the set proved to be its greatest flaw when they warped out of shape while the prop was not being used. The damage was too extensive to repair, and the new set had to be discarded in favour of adopting a replacement based on the old console design. | |||
== Synopsis == | == Synopsis == | ||
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== Plot == | == Plot == | ||
=== Part 1 === | === Part 1 === | ||
A small [[spacecraft]] flies through an [[asteroid belt]]. Despite the efforts of the three-man crew, it is drawn into an anomaly. An energy discharge strikes the ship and infects | A small [[spacecraft]] flies through an [[asteroid belt]]. Despite the efforts of the three-man crew, it is drawn into an anomaly. An energy discharge strikes the ship and infects its [[computer]] with a [[The Swarm (The Invisible Enemy)|virus]], which declares, "Contact has been made." | ||
By the time the ship reaches [[Titan Base]], the three crewmen have been infected also. They kill the resident crew and reveal their slowly changing faces. When the station supervisor, [[Lowe (The Invisible Enemy)|Lowe]], realises the men he knew are now trying to take over the base, he sends out a distress call. | By the time the ship reaches [[Titan Base]], the three crewmen have been infected also. They kill the resident crew and reveal their slowly changing faces. When the station supervisor, [[Lowe (The Invisible Enemy)|Lowe]], realises the men he knew are now trying to take over the base, he sends out a distress call. | ||
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The [[Fourth Doctor]] and [[Leela]], back in the refurbished [[console room]], intercept the distress signal and proceed towards [[Titan]]. They pass through the same anomaly. The Doctor is struck by the energy, collapsing on the floor. He eventually recovers but seems disorientated and briefly has trouble speaking. Despite Leela's warrior instincts telling her there is danger and evil on the station, the Doctor insists they answer the mayday. The shuttle crew are already aware of [[The Doctor's TARDIS|the TARDIS]]' imminent arrival and prepare for the coming of "[[the Nucleus]]". Lowe tries to stop them, killing [[Silvey]], but [[Safran]] and [[Meeker]] chase him into the [[cryogenic]] section and lock him in. | The [[Fourth Doctor]] and [[Leela]], back in the refurbished [[console room]], intercept the distress signal and proceed towards [[Titan]]. They pass through the same anomaly. The Doctor is struck by the energy, collapsing on the floor. He eventually recovers but seems disorientated and briefly has trouble speaking. Despite Leela's warrior instincts telling her there is danger and evil on the station, the Doctor insists they answer the mayday. The shuttle crew are already aware of [[The Doctor's TARDIS|the TARDIS]]' imminent arrival and prepare for the coming of "[[the Nucleus]]". Lowe tries to stop them, killing [[Silvey]], but [[Safran]] and [[Meeker]] chase him into the [[cryogenic]] section and lock him in. | ||
[[File:Leela Learns to write.jpg|thumb|left|Leela learns to write.]] | [[File:Leela Learns to write.jpg|thumb|left|Leela learns to write.]] | ||
The Doctor and Leela separate and explore the station. Leela finds a frozen Lowe and helps him recover, learning of the shuttle crew's strange behaviour. The Doctor meets Safran and Meeker, who use the energy discharge to further infect him. They order him to kill Leela, who is immune and therefore useless to them. When the Doctor finds her, Meeker insists that he is not in danger from the Nucleus that infests the Doctor's body. Leela kills Meeker, but not before he has infected Lowe. As Lowe leaves to follow Safran, the Doctor creeps up behind Leela, his hand covered with silver fur, and aims a weapon at her back. | The Doctor and Leela separate and explore the station. Leela finds a frozen Lowe in the cryogenic section and helps him recover, learning of the shuttle crew's strange behaviour. The Doctor meets Safran and Meeker, who use the energy discharge to further infect him. They order him to kill Leela, who is immune and therefore useless to them. When the Doctor finds her, Meeker insists that he is not in danger from the Nucleus that infests the Doctor's body. Leela kills Meeker, but not before he has infected Lowe. As Lowe leaves to follow Safran, the Doctor creeps up behind Leela, his hand covered with silver fur, and aims a weapon at her back. | ||
=== Part 2 === | === Part 2 === | ||
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* [[Visual effects assistant|Visual Effects Assistants]] - [[Mat Irvine]], [[Steve Bowman]], [[Andrew Lazell|Andy Lazell]] ([[TCH 27]]) | * [[Visual effects assistant|Visual Effects Assistants]] - [[Mat Irvine]], [[Steve Bowman]], [[Andrew Lazell|Andy Lazell]] ([[TCH 27]]) | ||
== | == Worldbuilding == | ||
* The Doctor suggests a "kind of [[St. Elmo's fire]]" is responsible for the halo of light that momentarily surrounds him. | * The Doctor suggests a "kind of [[St. Elmo's fire]]" is responsible for the halo of light that momentarily surrounds him. | ||
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* Professor [[Frederick Marius|Marius]] is said to be an expert in [[extraterrestrial pathological endomorphism]]s. | * Professor [[Frederick Marius|Marius]] is said to be an expert in [[extraterrestrial pathological endomorphism]]s. | ||
* Professor Marius takes an [[Electroencephalography|encephalograph]] out of the Doctor. | * Professor Marius takes an [[Electroencephalography|encephalograph]] out of the Doctor. | ||
* The Doctor says he has lost the ability to tune his brain's [[Reflex Link]] with "The [[Time Lord Intelligentsia]] - a thousand super-brains in one." | |||
=== The Doctor === | === The Doctor === | ||
* Leela tells the receptionist that the Doctor is from [[Gallifrey]]. The receptionist believes it to be in [[Ireland]]. | * Leela tells the receptionist that the Doctor is from [[Gallifrey]]. The receptionist believes it to be in [[Ireland]]. | ||
=== Influences === | |||
* The idea of injecting miniaturised people into someone's body in order to solve a medical problem, and especially the exit through the tear duct, are strongly reminiscent of the film {{wi|Fantastic Voyage}} and its novelisation by [https://en.wikipedia.org/wiki/Isaac_Asimov Issac Asimov], of which [[Bob Baker]] and [[Dave Martin]] drew inspiration for this story from <ref>http://www.shannonsullivan.com/doctorwho/serials/4t.html</ref>. | |||
== Story notes == | == Story notes == | ||
* This story was listed on the 1970s ''Doctor Who Sound Effects'' LP as ''The Enemy Within''. | * This story was listed on the 1970s ''Doctor Who Sound Effects'' LP as ''The Enemy Within''. | ||
* This story featured more extensive model work than any previous ''Doctor Who'' story. ([[INFO]]: ''The Invisible Enemy'') | * This story featured more extensive model work than any previous ''Doctor Who'' story. ([[INFO]]: ''The Invisible Enemy'') | ||
* According to [[Matt Irvine]], the model used for the cratered surface of [[Titan]] was a re-use of the model used for the surface of the Moon in ''[[Space: 1999]]''. ([[DCOM]]: ''The Invisible Enemy'') | * According to [[Matt Irvine]], the model used for the cratered surface of [[Titan]] was a re-use of the model used for the surface of the Moon in ''[[Space: 1999]]''. ([[DCOM]]: ''The Invisible Enemy'') Several pieces of furniture on Titan Base are reused from that series as well. | ||
* The story re-introduced the "primary" [[TARDIS console room]], now slightly redesigned by [[Barry Newbery]]. It had been abandoned for the wooden, "secondary" control room in the previous year's [[The Masque of Mandragora|season opener]]. It would remain in use, with modifications, until [[season 25]]. | * The story re-introduced the "primary" [[TARDIS console room]], now slightly redesigned by [[Barry Newbery]]. It had been abandoned for the wooden, "secondary" control room in the previous year's [[The Masque of Mandragora (TV story)|season opener]]. It would remain in use, with modifications, until [[Season 25 (Doctor Who 1963)|season 25]]. | ||
* Leela is left-handed, or at least writes with her left hand. | * Leela is left-handed, or at least writes with her left hand. [[Louise Jameson]] is right-handed, but chose to make Leela a left-handed writer in order to increase her awkwardness at this task. | ||
* In the Titan Base and Bi-Al Foundation sets, all signage is written phonetically in what the script calls "Finglish" — thus, for example, signs read "IMURJINSEE EGSIT" and "ISOLAYSHUN WARD" instead of "Emergency Exit" and "Isolation Ward". ([[INFO]]: ''The Invisible Enemy'') | * In the Titan Base and Bi-Al Foundation sets, all signage is written phonetically in what the script calls "Finglish" — thus, for example, signs read "IMURJINSEE EGSIT" and "ISOLAYSHUN WARD" instead of "Emergency Exit" and "Isolation Ward". ([[INFO]]: ''The Invisible Enemy'') | ||
* This is the only story in which the monitor on K9's left side actually displays anything. | * This is the only story in which the monitor on K9's left side actually displays anything. | ||
* John Leeson is credited as "Nucleus Voice" for part one, while for parts two to four he is billed as "Nucleus & K9 Voice" on-screen and as "Nucleus Voice and K9" in ''Radio Times''. | * [[John Leeson]] is credited as "Nucleus Voice" for part one, while for parts two to four he is billed as "Nucleus & K9 Voice" on-screen and as "Nucleus Voice and K9" in ''[[Radio Times]]''. | ||
* The ''Radio Times'' programme listing for part two was accompanied by a black and white full-length publicity still of the Doctor, Leela and K9, with the accompanying caption "The Doctor and Leela are joined by a new ally, K9, who'll be helping them in the fight against ''The Invisible Enemy''. ''Dr. Who'': 6.5". | * [[Radio Times|The ''Radio Times'']] programme listing for part two was accompanied by a black-and-white full-length publicity still of the Doctor, Leela and K9, with the accompanying caption "The Doctor and Leela are joined by a new ally, K9, who'll be helping them in the fight against ''The Invisible Enemy''. ''Dr. Who'': 6.5". | ||
* The introduction of K9 Mark I marks the beginning of an almost seven-year span of stories featuring at least one non-human companion which lasted until the departure of [[Vislor Turlough|Turlough]], a native of [[Trion (planet)|Trion]], and the destruction of [[Kamelion]], a shape-shifting [[android]], in ''[[Planet of Fire (TV story)|Planet of Fire]]'' in 1984. | * The introduction of K9 Mark I marks the beginning of an almost seven-year span of stories featuring at least one non-human companion which lasted until the departure of [[Vislor Turlough|Turlough]], a native of [[Trion (planet)|Trion]], and the destruction of [[Kamelion]], a shape-shifting [[android]], in ''[[Planet of Fire (TV story)|Planet of Fire]]'' in 1984. | ||
* [[John Leeson]] later reprised his role as the [[The Nucleus|Nucleus of the Swarm]] in the audio story ''[[Revenge of the Swarm (audio story)|Revenge of the Swarm]]'' in [[2014 (releases)|2014]]. | * [[John Leeson]] later reprised his role as the [[The Nucleus|Nucleus of the Swarm]] in the audio story ''[[Revenge of the Swarm (audio story)|Revenge of the Swarm]]'' in [[2014 (releases)|2014]]. | ||
*Working titles for this story included ''[The] Invisible Invader'', ''The Invader Within'', and ''The Enemy Within''.<ref>http://www.shannonsullivan.com/doctorwho/serials/4t.html</ref> | * Working titles for this story included ''[The] Invisible Invader'', ''The Invader Within'', and ''The Enemy Within''.<ref>http://www.shannonsullivan.com/doctorwho/serials/4t.html</ref> | ||
* [[Tom Baker]] had terrible trouble acting opposite the Nucleus because he could not take it seriously. At one point, he started singing "Prawn Free". Finally, he blurted out, "How am I supposed to act to a f*cking prawn?" | |||
* [[Bob Baker]] and [[Dave Martin]] got the idea for a sentient virus as the antagonist from a newspaper article on virus mutations. The idea of diseases impacting the mind and imagination came from an article in ''[https://en.wikipedia.org/wiki/Scientific_American Scientific American].'' | |||
* [[Bob Baker]] and [[Dave Martin]] originally hoped that much of part three could be made on location, with the Doctor's mind represented by college cloisters or a stately garden. | |||
* Originally, the Nucleus' emergence into the macroscopic world was to trigger the transformation of its infected victims into similar creatures. | |||
* At one stage, the story's resolution involved the Doctor igniting Titan's atmosphere in order to destroy the Nucleus and its breeding tank. | |||
* [[Bob Baker]] and [[Dave Martin]] developed "Contact has been made" as a mantra in the same manner as "[[Eldrad]] must live" from [[The Hand of Fear (TV story)|''The Hand of Fear.'']] | |||
* [[Derrick Goodwin]] and [[Nell Curran]] would later marry. | |||
* Because of the money spent on K9 and the model sequences, little was left over to construct the Nucleus costume. The result, inspired by scripted references to its prawn-like appearance, was not popular with the cast and crew, and was very uncomfortable for [[John Scott Martin]] to wear. To make matters worse, bits of fibreglass tended to flake off, sticking to the camera lenses and becoming a breathing hazard. | |||
=== Ratings === | === Ratings === | ||
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* The first establishing shot of the Bi-Al Foundation shows it with the damage later caused by the shuttle crash. | * The first establishing shot of the Bi-Al Foundation shows it with the damage later caused by the shuttle crash. | ||
* When Lowe presses the distress button in his office, the entire wall shakes. | * When Lowe presses the distress button in his office, the entire wall shakes. | ||
* | * In one scene there is an obvious crack in a wall before it is fired at by K9; the crack was originally concealed, but the scene was reshot with little time left to repair the join. | ||
* The knife that Leela kills Meeker with is very obviously loosely sewn to his clothes. It wobbles back and forth after he falls. | * The knife that Leela kills Meeker with is very obviously loosely sewn to his clothes. It wobbles back and forth after he falls. | ||
* When K9 first meets Leela, a reflection of a moving crew member can be seen on the front of the cloning booth. | * When K9 first meets Leela, a reflection of a moving crew member can be seen on the front of the cloning booth. | ||
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* When K9 shoots one of the infected men, the blast beam appears to come out of his eyes, then moves down to his snout as the camera moves. | * When K9 shoots one of the infected men, the blast beam appears to come out of his eyes, then moves down to his snout as the camera moves. | ||
* When Marius's nurse meets Leela and K9 in the corridor, the camera and crew members can be seen reflected in her head-mirror. | * When Marius's nurse meets Leela and K9 in the corridor, the camera and crew members can be seen reflected in her head-mirror. | ||
* When the Doctor, Leela and K9 first leave the Bi-Al Foundation in the TARDIS in part four, Professor Maruis is visibly stood next to the TARDIS as the Doctor enters, waving him goodbye. However, in the subsequent wide shot of the TARDIS dematerialising, he has disappeared. | |||
* When the Doctor is congratulating himself on blowing up the Swarm, the shadow of a boom mike can be seen. | * When the Doctor is congratulating himself on blowing up the Swarm, the shadow of a boom mike can be seen. | ||
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* The Swarm remained dormant in the TARDIS' computer until the Doctor's [[Seventh Doctor|seventh incarnation]]. Shortly afterwards, the Doctor returned to Titan Base in the company of [[Ace]] and [[Hex|Hector Thomas]] in [[4920]]. The TARDIS had been commandeered by Hector, who had fallen under the control of the Swarm. It ensured its own creation by returning to the Bi-Al Foundation, where it mutated from the [[Saturnian plague]]. ([[AUDIO]]: ''[[Revenge of the Swarm (audio story)|Revenge of the Swarm]]'') | * The Swarm remained dormant in the TARDIS' computer until the Doctor's [[Seventh Doctor|seventh incarnation]]. Shortly afterwards, the Doctor returned to Titan Base in the company of [[Ace]] and [[Hex|Hector Thomas]] in [[4920]]. The TARDIS had been commandeered by Hector, who had fallen under the control of the Swarm. It ensured its own creation by returning to the Bi-Al Foundation, where it mutated from the [[Saturnian plague]]. ([[AUDIO]]: ''[[Revenge of the Swarm (audio story)|Revenge of the Swarm]]'') | ||
* K9's creation is explained in [[PROSE]]: ''[[Tautology (short story)|Tautology]]'' and ''[[One Man and His Dog (short story)|One Man and His Dog]]''. | * K9's creation is explained in [[PROSE]]: ''[[Tautology (short story)|Tautology]]'' and ''[[One Man and His Dog (short story)|One Man and His Dog]]''. | ||
* While clones of the Doctor and Leela are miniaturised in this story, the Doctor would later himself being miniaturised with his [[Clara Oswald|companion]] during his [[Twelfth Doctor|twelfth incarnation]] and injected into a [[Dalek]]. ([[TV]]: ''[[Into the Dalek (TV story)|Into the Dalek]]'') | |||
== Home video and audio releases == | == Home video and audio releases == | ||
| Line 179: | Line 198: | ||
* Region 1 - [[2 September (releases)|2 September]] 2008 | * Region 1 - [[2 September (releases)|2 September]] 2008 | ||
::NTSC - | ::NTSC - | ||
* This story was released on DVD on 16 June 2008 in | * This story was released on DVD on [[16 June (releases)|16 June]] [[2008 (releases)|2008]] in the ''[[K9 Tales]]'' Box Set. It was released in the box set alongside ''[[K9 and Company (TV series)|K9 and Company]]''. | ||
* Early Region 2 versions of the box set feature a fault on ''The Invisible Enemy'' disc. A scene from half way through episode 3 is skipped and appears after the closing credits. [[2 entertain|2|entertain]] was aware of the problem but decided to go on with the release as planned. They fixed the problem for later copies of the DVD box set. | * Early Region 2 versions of the box set feature a fault on ''The Invisible Enemy'' disc. A scene from half way through episode 3 is skipped and appears after the closing credits. [[2 entertain|2|entertain]] was aware of the problem but decided to go on with the release as planned. They fixed the problem for later copies of the DVD box set. | ||
==== Special Features ==== | |||
* Commentary by [[Louise Jameson]], [[John Leeson]], [[Bob Baker]] and [[ | * Commentary by [[Louise Jameson]] ([[Leela]]), [[John Leeson]] ([[K9 Mark I|K-9]]), [[Bob Baker]] (Writer) and [[Mat Irvine]] (Visual Effects Designer) | ||
* Dreams and Fantasy - | * ''[[Dreams and Fantasy (documentary)|Dreams and Fantasy]]'' - The cast and crew recall the making of this story and even take the original K-9 for walkies! | ||
* Studio Sweepings - | * Studio Sweepings - A rare opportunity to go behind the scenes on the recording of this story, courtesy of a time-coded videotape recording | ||
* Visual Effect - | * ''[[Visual Effect: The Modelwork of The Invisible Enemy|Visual Effect]]'' - Mat Irvine meets up with his old colleague [[Ian Scoones]] at [[Bray Studios]] to talk about the visual effects for ''The Invisible Enemy'' | ||
* [[Blue Peter]] - | * ''[[Blue Peter (series)|Blue Peter]]'' - K-9 meets John Noakes and Shep | ||
* CGI Effects - Option to watch serial with some original effects shots replaced by new computer-generated images | * Optional CGI Effects - Option to watch serial with some of the original effects shots replaced by new computer-generated images | ||
* Trailers and | * Trailers and Continuities - [[BBC One|BBC1]] ephemera from 1977 | ||
* ''[[Radio Times]]'' Billings - Listings from ''Radio Times'' (PDF DVD-ROM) | |||
* Photo Gallery | * Photo Gallery | ||
* Coming Soon Trailer - ''[[The Brain of Morbius (TV story)|The Brain of Morbius]]'' | |||
* Production Subtitles | * Production Subtitles | ||
* [[Easter Egg]]: K9 appears on {{wi|The Generation Game|''Larry Grayson's Generation Game''}}. To access this hidden feature, press left at Visual Effect on the Special Features menu to reveal a hidden ''[[Doctor Who]]'' logo. | |||
* [[Easter Egg]] | |||
Notes: | Notes: | ||
| Line 202: | Line 222: | ||
The Invisible Enemy.jpg|DVD Region 4 DVD cover | The Invisible Enemy.jpg|DVD Region 4 DVD cover | ||
File:Bbcdvd-theinvisble enemy.jpg|Region 2 DVD UK cover | File:Bbcdvd-theinvisble enemy.jpg|Region 2 DVD UK cover | ||
</gallery> | </gallery><br /> | ||
<gallery position="center" captionalign="center" hideaddbutton="true"> | <gallery position="center" captionalign="center" hideaddbutton="true"> | ||
File:K9 Tales DVD box set Australian cover.jpg|Australia Region 4 box set | File:K9 Tales DVD box set Australian cover.jpg|Australia Region 4 box set | ||
K9 tales region 2.jpg|UK Region 2 box set | |||
</gallery> | </gallery> | ||
| Line 221: | Line 239: | ||
=== Digital releases === | === Digital releases === | ||
* The story is available for streaming in the US | * The story is available for streaming in Canada and the US on BritBox or Amazon Instant Video in the UK. | ||
== External links == | == External links == | ||
| Line 230: | Line 248: | ||
* {{briefhistory|serials/4t.html|The Invisible Enemy}} | * {{briefhistory|serials/4t.html|The Invisible Enemy}} | ||
== Footnotes== | == Footnotes == | ||
{{reflist}} | {{reflist}} | ||
{{DWTV}} | {{DWTV}} | ||
{{TitleSort}} | {{TitleSort}} | ||
[[Category:Doctor Who (1963) television stories]] | [[Category:Doctor Who (1963) television stories]] | ||
[[Category:K9 television stories]] | [[Category:K9 television stories]] | ||
| Line 245: | Line 262: | ||
[[Category:The Swarm stories]] | [[Category:The Swarm stories]] | ||
[[Category:Stories set on Titan]] | [[Category:Stories set on Titan]] | ||
[[es:The Invisible Enemy]] | |||
[[ru:Невидимый враг]] | |||
