Written by Johnny Byrne
"I warned you about the Doctor but you chose to ignore me. Now you suffer!"
| Episode Title | Premiere Date |
| Episode 1 | 31/01/1981 |
| Episode 2 | 07/02/1981 |
| Episode 3 | 14/02/1981 |
| Episode 4 | 21/02/1981 |
Traken is a planet ruled by the all-powerful Keeper, who reigns for a thousand years and ensures that his subjects live a life of tranquility and harmony, free from the forces of evil and corruption. Now the Keeper is dying. Summoned by the ailing Keeper, the Doctor and Adric discover that all is not well on Traken. An evil presence threatens the future of the planet — an evil that knows all about the Doctor.
Cast & Crew
The Doctor: Tom Baker
Adric: Matthew Waterhouse
Nyssa: Sarah Sutton
Melkur/The Master: Geoffrey Beevers
Tremas/The Master: Anthony Ainley
Kassia: Sheila Ruskin
The Keeper: Denis Carey
Seron: John Woodnutt
Luvic: Robin Soans
Producer: John Nathan-Turner
Director: John Black
Scriptwriter: Johnny Byrne
