All Cast
Tom Baker
The Doctor
Matthew Waterhouse
Adric
Sarah Sutton
Nyssa
Geoffrey Beevers
Melkur / The Master
Anthony Ainley
Tremas / The Master
Sheila Ruskin
Kassia
Denis Carey
The Keeper
John Woodnutt
Seron
Margot Van der Burgh
Katura
Robin Soans
Luvic
Roland Oliver
Neman
Liam Prendergast
Foster