Mawdryn Undead (TV story)

Synopsis
A warp ellipse draws the TARDIS off course. The Fifth Doctor's companions are separated from him not in space, but in time, and he has to deal with a treacherous schoolboy named Turlough. But why does the Doctor's old friend the Brigadier not remember him at all?

Part one
In 1983, the former Brigadier Lethbridge-Stewart teaches mathematics at Brendon Public School, where Turlough is a student. Turlough convinces Ibbotson to go on a joyride with him in the Brigadier's car, which crashes. While unconscious, Turlough is contacted by the sinister Black Guardian. The Black Guardian offers Turlough transportation off Earth if he will kill the Doctor. At the same time, the Doctor, Tegan and Nyssa have problems of their own. The Doctor's TARDIS is caught in a warp ellipse and materializes on board a starliner locked in a perpetual orbit in time and space. Turlough, under the Black Guardian's instructions, transports himself onto the liner from Earth by means of a transmat capsule and encounters the TARDIS crew. The Doctor travels to Earth via transmat, taking Turlough with him, to get rid of the transmat interference that is trapping the TARDIS on the liner. As the Doctor is sorting out the device, Turlough, responding to the Black Guardian's exhortations, picks up a large rock and prepares to smash it down on the back of the Doctor's head...

Part two
The Doctor is knocked backward by a small explosion, forcing the rock out of Turlough's hands. Unfortunately, when the TARDIS tries to materialise on Earth, it vanishes. The Doctor meets the Brigadier at the Brendon school, but is puzzled when his old comrade-in-arms does not remember their time together at first. When the Doctor says he has to find Tegan and his TARDIS, the Brigadier remembers meeting her in 1977. The Doctor realises that the TARDIS is right there - just six years earlier - and tries to get the Brigadier to remember the events that led to his nervous breakdown in 1977.

In 1977, Tegan and Nyssa encounter the transmat capsule, but inside is an alien-looking humanoid whom they initially believe is the Doctor, horribly injured. Meeting the younger Brigadier, they bring him and the alien back to the starliner. Tegan, Nyssa and the Brigadier enter the TARDIS control room. The alien, who is a scientist called Mawdryn, now wearing the Doctor's old coat, turns to face them. The top of his skull is missing, revealing his pulsing brain. Nyssa screams in horror.

Part three
Under the pretense of being the Doctor, suffering a failed regeneration, Mawdryn convinces the other to bring the TARDIS to the ship, claiming it has restorative capabilities. Meanwhile, the Doctor, Turlough and the present-day Brigadier use a TARDIS homing device on the damaged Transmat to bring themselves to the ship, splitting up shortly after to search for Tegan and Nyssa. Under the Black Guardian's instruction, Turlough opens a secret room, revealing several humanoids suffering from the same malady as Mawdryn. Mawdryn fools the present-day Brigadier into using a stolen Time Lord device to stabilise his condition. Finding the TARDIS, the Doctor reunites with Tegan and Nyssa. When the Doctor finds out that there are two Brigadiers aboard, he has to try to keep the two apart lest the resulting energy discharge prove catastrophic.

The Doctor and Nyssa meet with the present-day Brigadier and Mawdryn. Mawdryn revealed that his crew tried to steal the secret of regeneration from the Time Lord, but instead suffered an agonising, eternal variation of the process. Tegan is then chased into the room by Mawdryn's mutated crewmates. The mutants take their places in the regeneration room and Mawdryn pleads with the Doctor to help them die by giving them his energy. The Doctor refuses, explaining to Tegan that if he did so it would mean the end of him as a Time Lord...

Part four
Under the Black Guardian's orders, Turlough locates the past version of the Brigadier, and tricks him into the room Mawdryn's crew previously occupied, in order to keep the two Brigadiers from touching. He then meets the Doctor, who tells him to use the transmat to bring the past Brigadier back to Earth. Trying to leave in the TARDIS, the Doctor discovers that Tegan and Nyssa have been infected by the same malady as Mawdryn and his compatriots. Attempted time travel accelerates their conditions, and reversing out of the warp ellipse only regresses Tegan and Nyssa into children. The only cure, it seems, is to do what Mawdryn demands: the Doctor must give up the energy from his remaining regenerations. Meanwhile, the past Brigadier manages to escape the room, and encounters Madryn and his crew. Fearing the time imbalance, they send him into the transmat. However, unbeknownst to them, the transmat cannot make the trip while the TARDIS is on the vessel, and the capsule returns to it's station seconds later.

Hooking himself up to Mawdryn's apparatus, the Doctor is about to sacrifice himself when the two Brigadiers meet and touch hands, causing a discharge of temporal energy at precisely the right instant. Tegan and Nyssa are cured, the alien scientists succeed in ending their undead existence, and the Doctor remains a Time Lord. The younger Brigadier, however, will not remember his time with the Doctor until they meet again in 1983. The Doctor, Nyssa and Tegan deliver the 1977 and 1983 versions of the Brigadier back to the school. Turlough is in the TARDIS control room when they return. He asks if he can join them, and the Doctor comments that he already has. In space, Mawdryn's ship self-destructs.

Cast

 * The Doctor - Peter Davison
 * Tegan Jovanka - Janet Fielding
 * Nyssa - Sarah Sutton
 * Vislor Turlough – Mark Strickson
 * Brigadier Alistair Lethbridge-Stewart – Nicholas Courtney
 * The Black Guardian – Valentine Dyall
 * Headmaster Mr. Sellick– Angus MacKay
 * Ibbotson - Stephen Garlick
 * Dr Runciman - Roger Hammond
 * Matron - Sheila Gill
 * Mawdryn – David Collings
 * Mutants - Peter Walmsley, Brian Darnley

Crew

 * Studio Lighting - Don Babbage
 * Visual Effects - Stuart Brisdon
 * Production Associate - June Collins
 * Costumes - Richard Croft
 * Title Music - Ron Grainer and the BBC Radiophonic Workshop
 * Theme arrangement - Peter Howell
 * Film Cameraman - Godfrey Johnson
 * Incidental Music - Paddy Kingsland
 * Production Assistant - Valerie Letley
 * Special Sounds - Dick Mills
 * Make-Up - Carolyn Perry, Sheelagh Wells
 * Studio Sound - Martin Ridout
 * Costumes - Amy Roberts
 * Designer - Stephen Scott
 * Assistant Floor Manager - Ian Tootle
 * Film Editor - Chris Woolley
 * Writer - Peter Grimwade
 * Script Editor - Eric Saward
 * Director - Peter Moffatt
 * Producer - John Nathan-Turner

Anatomy and physiology

 * Tegan and Nyssa refer to seeing the Doctor regenerate.

Individuals

 * The Doctor lists off several people to try to jog the Brigadier's memory including: Harry Sullivan, Jo Grant, Sarah Jane Smith, Liz Shaw, Yeti and UNIT.
 * Sergeant Benton left the army in the 1970s and is now a used car salesman.
 * Harry Sullivan went to work with NATO on a project in Porton Down.

Races and species

 * Tegan is still wondering if she'll be free of the Mara.
 * During the series of flashbacks the Brigadier sees; The First Doctor, Second Doctor, Third Doctor, Fourth Doctor, a Yeti, a Cyberman, an Axon, a Dalek, K1 Robot and a Zygon.

TARDIS

 * The Zero Room is mentioned.

Technology

 * Mawdryn stole a metamorphic symbiosis regenerator, used by Time Lords in cases of acute regenerative crisis, but it induced a perpetual, deathless mutation.

Theories and concepts

 * The Doctor cites the Blinovitch Limitation Effect.
 * The Doctor talks about reversing the polarity of the neutron flow a catchphrase of his third incarnation.

Transport technology

 * Tegan knows a lot about transmats.
 * Tegan mentions the Mary Celeste.

Story notes

 * Every story during Season 20 had the Doctor face an enemy from each of his past incarnations. For this trilogy, the enemy was the Black Guardian, who last faced the fourth incarnation of the Doctor at the conclusion of the Key to Time saga in 1979.
 * David Collings, who played Mawdryn, also appeared in the Fourth Doctor stories DW: Revenge of the Cybermen as Vorus and DW: The Robots of Death as Poul, and would himself play an alternate Doctor in Big Finish Productions' Doctor Who Unbound audio drama, Full Fathom Five.
 * The original intent of the production team was for the character of Ian Chesterton, one of the original regulars from the series' first two seasons from 1963-65, to return for a guest appearance in this story, hence the school setting as Chesterton was a science teacher. However, actor William Russell proved to be unavailable. Some consideration was given to using instead the character of Harry Sullivan, who was a regular in the programme for a season in the mid-1970s, before the return of Lethbridge-Stewart was eventually decided upon.
 * Radio Times credits Nicholas Courtney as Brigadier Lethbridge-Stewart in the combined cast for Parts One/Two, and as Brigadier in the combined cast for Parts Three/Four. All on-screen credits read The Brigadier.
 * Former producer Graham Williams, the creator of the Guardians, did not know about their return in this season and learned about it only years later during an on-stage interview at a Doctor Who convention.
 * Originally the slot that this story occupies would have been given to the long-delayed "The Song of the Space Whale" (or "Space Whale"), in which Turlough would have been one of a group of colonists, however this was once again cancelled and this story took its place.
 * Peter Grimwade's previous story, DW: Time-Flight, also takes place in two different times.

Ratings

 * Part 1 - 6.5 million viewers
 * Part 2 - 7.5 million viewers
 * Part 3 - 7.4 million viewers
 * Part 4 - 7.7 million viewers

Myths
to be added

Filming locations

 * Trent Park campus of Middlesex Polytechnic, Cockfosters, Enfield, Greater London
 * BBC Television Centre (Studio 6), Shepherd's Bush, London

Production errors
to be added

Continuity

 * The "Black Guardian Trilogy" continues in the story DW: Terminus.
 * The Doctor last encountered the Black Guardian in DW: The Armageddon Factor, in which he also hinted that what he thought was the White Guardian in DW: The Ribos Operation may have been the Black Guardian posing as his counterpart.
 * At the story's opening, Tegan is still unsure if she is finally free of the Mara, a reference to the previous story, DW: Snakedance.
 * Mawdryn Undead also makes the first explicit statement in the series that the current Doctor is the fifth incarnation.
 * Another example of Time Lord technology being used to create perpetual regeneration was seen in DW: Underworld.
 * Turlough's origins are finally explained in DW: Planet of Fire.
 * Mawdryn finds in the TARDIS and wears the red coat worn by the Fourth Doctor.
 * There are a series of flashbacks as the Brigadier remembers including:
 * DW: The Web of Fear: a Yeti,
 * DW: The Invasion: a Cyberman and the Second Doctor,
 * DW: Spearhead from Space: Third Doctor,
 * DW: The Claws of Axos: an Axon,
 * DW: Day of the Daleks: a Dalek,
 * DW: The Three Doctors: seeing the interior of the Doctor's TARDIS and the First Doctor,
 * DW: Robot: the K1 Robot,
 * DW: Terror of the Zygons: a Zygon and the Fourth Doctor.


 * Tegan knows a lot about transmats, likely from her experiences in MA: Cold Fusion.

Timeline

 * This story occurs after MA: Goth Opera
 * This story occurs before BFA: Cobwebs

DVD releases
This story along with DW: Terminus and DW: Enlightenment were released in The Black Guardian Trilogy Boxset on 10th August 2009 in the UK.

Video releases
This story was released on VHS in November 1992 in the UK markets, 1993 in Australian markets and 1994 in US markets.

Novelisation and its audiobook

 * Main article: Mawdryn Undead (novelisation)


 * Novelised by Peter Grimwade in 1984.