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