Overview
The story revolves around the lost planet Shada, on which the Time Lords built a prison for defeated would-be conquerors of the universe. Skagra, one such inmate, needs the help of one of the prison's inmates. He finds nobody knows where Shada is anymore except one aged Time Lord who has retired to Earth, where he is a professor at St. Cedd's College, Cambridge. Luckily for the universe, Skagra's attempt to force the information out of Professor Chronotis coincides with a visit by the professor's old friend, the Doctor. (Filming for this story was never finished, and in this version the story is completed via on-camera narration.)
Production
BBC
Cast
More Like This
Doctor Who: The Time Warrior
Doctor Who: Invasion of the Dinosaurs
Doctor Who: Death to the Daleks
Doctor Who: The Monster of Peladon
Doctor Who: Planet of the Spiders
Doctor Who: The Masque of Mandragora
Doctor Who: The Deadly Assassin
Doctor Who: The Face of Evil
Doctor Who: The Ultimate Foe
Doctor Who: Terror of the Vervoids