On screen
Cast
13 credited performers
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
Artwork unavailable
Michael Kilgarriff
The Robot
Edward Burnham
Professor Kettlewell
Artwork unavailable
Alec Linstead
Jellicoe
Artwork unavailable
Timothy Craven
Short
Artwork unavailable
Clive Barrie
Phillips
Artwork unavailable
Walter Goodman
Joseph Chambers
Jon Pertwee
The Doctor