The Doctor needs somewhere peaceful to recover from his traumatic regeneration. But the sanctuary of Castrovalva is not all it seems, as the Master will stop at nothing to gain his revenge over the Doctor...
Peter Davison
as The Doctor
Matthew Waterhouse
as Adric
Sarah Sutton
as Nyssa
Janet Fielding
as Tegan Jovanka
Anthony Ainley
as The Master / The Portreeve
Dallas Cavell
as Head of Security
Frank Wylie
as Ruther
Derek Waring
as Shardovan
Michael Sheard
as Mergrave
Souska John
as Child
Tom Baker
as The Doctor (archive footage)
Adrian Gibbs
as The Watcher (archive footage)
