All Cast
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
