Top 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
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Michael Kilgarriff
The Robot
Edward Burnham
Professor Kettlewell
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Alec Linstead
Jellicoe
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Timothy Craven
Short
