Tom Baker
The Doctor
Tom Baker
The Doctor
Elisabeth Sladen
Sarah Jane Smith
Ian Marter
Harry Sullivan
Nicholas Courtney
Brigadier Lethbridge-Stewart
John Levene
RSM Benton
Patricia Maynard
Miss Winters
Michael Kilgarriff
The Robot
Edward Burnham
Professor Kettlewell
Alec Linstead
Jellicoe
Timothy Craven
Short
Clive Barrie
Phillips
Walter Goodman
Joseph Chambers
Jon Pertwee
The Doctor
Christopher Barry
Director
Dudley Simpson
Original Music Composer
Terrance Dicks
Writer
Barry Letts
Producer
Robert Holmes
Script Editor
Trevor Webster
Sound
Peter Grimwade
Production Assistant
Nigel Wright
Lighting Director
James Acheson
Costume Design
Vic Godrich
Sound
Dick Mills
Special Sound Effects
Clifford Culley
Visual Effects
Ian Rawnsley
Production Design
John Mason
Lighting Director
Judy Clay
Makeup Artist
John Holmes
Sound