Tom Baker
The Doctor
Tom Baker
The Doctor
Louise Jameson
Leela
Colin Douglas
Reuben / Rutan (voice)
John Abbott
Vince Hawkins
Ralph Watson
Ben
Sean Caffrey
Lord Palmerdale
Alan Rowe
Colonel Skinsale
Annette Woollett
Adelaide
Rio Fanning
Harker
Terrance Dicks
Writer
Paddy Russell
Director
Graham Williams
Producer
Robert Holmes
Script Editor
Dudley Simpson
Original Music Composer