On screen
Cast
14 credited performers
Tom Baker
The Doctor
Matthew Waterhouse
Adric
Sarah Sutton
Nyssa
Geoffrey Beevers
Melkur (voice) / The Master
Anthony Ainley
Tremas / The Master
Sheila Ruskin
Kassia
Artwork unavailable
Denis Carey
The Keeper
John Woodnutt
Seron
Artwork unavailable
Margot Van der Burgh
Katura
Robin Soans
Luvic
Artwork unavailable
Roland Oliver
Neman
Artwork unavailable
Liam Prendergast
Foster
Artwork unavailable
Philip Bloomfield
Foster
Graham Cole
Melkur