The Keeper of Traken

114[a]The Keeper of Traken
Doctor Who serial
Cast
Others
Production
Directed byJohn Black
Written byJohnny Byrne
Script editorChristopher H. Bidmead
Produced byJohn Nathan-Turner
Executive producer(s)Barry Letts
Music byRoger Limb
Production code5T
SeriesSeason 18
Running time4 episodes, 25 minutes each
First broadcast31 January 1981 (1981-01-31)
Last broadcast21 February 1981 (1981-02-21)
Chronology
← Preceded by
Warriors' Gate
Followed by →
Logopolis
List of episodes (1963–1989)

The Keeper of Traken is the sixth serial of the 18th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 31 January to 21 February 1981.

In the serial, the alien time traveller the Master (Geoffrey Beevers) seeks a power on the planet Traken known as the Source which he wishes to use to restore his life.

The end of the serial introduces Anthony Ainley as the Master. The serial is also the debut of Sarah Sutton as companion-to-be Nyssa.
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