The newly-regenerated Doctor helps UNIT battle a sentient robot being manipulated by a corrupt scientific organization.
Cast:
Tom Baker, Elisabeth Sladen, Ian Marter, Nicholas Courtney, John Levene
Production:
BBC
The Doctor
Sarah Jane Smith
Harry Sullivan
Brigadier Lethbridge-Stewart
RSM Benton
Miss Winters
The Robot
Professor Kettlewell
Jellicoe
Short
Phillips
Joseph Chambers