Season 12 | EP 1


Written by Terrance Dicks

"According to my estimation of the resistance to pressure of vegetable fibre, it was stepped on by something that weighed a quarter of a ton!"

Episode Title Premiere Date
Episode 1 28/12/1974
Episode 2 04/01/1975
Episode 3 11/01/1975
Episode 4 18/01/1975

Full of energy but a touch erratic after his regeneration, the Doctor's recuperation is cut short as UNIT investigate a spate of robberies involving components for a top-secret disintegrator gun. The culprit is quickly identified as a highly sophisticated robot built by Professor Kettlewell, but was is the sinister agenda of the Scientific Reform Society? And can the Doctor rescue Sarah from the robot's clutches and avert catastrophe?

Cast & Crew

The Doctor: Tom Baker

Sarah Jane Smith: Elisabeth Sladen

Harry Sullivan: Ian Marter

Brigadier Lethbridge-Stewart: Nicholas Courtney

RSM Benton: John Levene

Miss Winters: Patricia Maynard

Robot: Michael Kilgarriff

Professor Kettlewell: Edward Burnham

Jellicoe: Alec Linstead

Producer: Barry Letts

Director: Christopher Barry

Scriptwriter: Terrance Dicks

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