Peter Davison
The Doctor
Acting
Sarah Sutton
Nyssa
Acting
Janet Fielding
Tegan Jovanka
Acting
Anthony Ainley
The Master / Kalid
Acting
Nigel Stock
Professor Hayter
Acting
Richard Easton
Captain Stapley
Acting
Keith Drinkel
Flight Engineer Scobie
Acting
Michael Cashman
First Officer Bilton
Acting
John Flint
Captain Urquhart
Acting
Judith Byfield
Angela Clifford
Acting
Peter Dahlsen
Horton
Acting
Brian McDermott
Sheard
Acting
Peter Cellier
Andrews
Acting
Matthew Waterhouse
Adric
Acting
Hugh Hayes
Anithon
Acting
André Winterton
Zarak
Acting