Mawdryn Undead (TV story)

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?

Summary
In 1983, the former Brigadier Lethbridge-Stewart teaches mathematics at Brendon Public School, where Turlough is a student. In the aftermath of a car accident, Turlough is contacted by the sinister Black Guardian, whom the Doctor thwarted during the quest for the Key to Time. Seeking revenge, the Black Guardian offers Turlough transportation off Earth if he will kill the Doctor.

Meanwhile, the Fifth Doctor, Tegan and Nyssa have problems of their own. The 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. Unfortunately, when the TARDIS tries to materialize 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 realizes 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, which is actually the prison of a group of alien scientists who had been trying to discover the Time Lord secret of regeneration. As Mawdryn, the leader of the group explains, they only succeeded in trapping themselves in a cycle of perpetual mutation and regeneration and now long for death. 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.

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. The only cure, it seems, is to do what Mawdryn demands: the Doctor must give up the energy from his remaining regenerations. 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...

After returning the Brigadiers to their respective time zones, Turlough asks if he can join the Doctor in his travels. The Doctor agrees, apparently not realizing he is taking an assassin into the fold.

Cast

 * The Doctor - Peter Davison
 * Tegan Jovanka - Janet Fielding
 * Nyssa - Sarah Sutton
 * Turlough – Mark Strickson
 * Brigadier Lethbridge-Stewart – Nicholas Courtney
 * The Black Guardian – Valentine Dyall
 * Headmaster – 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

Myths
To be added.

Ratings
To be added.

Continuity

 * The Doctor last encountered the Black Guardian in "The Armageddon Factor," in which he also hinted that what he thought was the White Guardian in "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, "Snakedance."
 * Turlough's origins are finally explained in "Planet of Fire."

Influences
To be added.

Location Filming
To be added.

Quotes
The Brigadier:"Someone just walked on my grave."
 * The Doctor: "Perhaps it was a Yeti, Colonel Lethbridge-Stewart."

Story Arcs

 * The Black Guardian Trilogy

Discontinuity

 * "Mawdryn Undead" has the unfortunate distinction of contributing to one of the biggest and most widely discussed contradictions in the Doctor Who universe: the "UNIT dating controversy".
 * "Mawdryn Undead" also makes the first explicit statement in the series that the current Doctor is the fifth incarnation, contradicting earlier stories such as "The Brain of Morbius" where previously unseen incarnations were apparently shown.

More Info

 * Story Novelization