The Doctor visits his old Time Lord friend Chronotis in Cambridge, 1979. But the ruthless Skagra has also arrived to retrieve a book that will help unlock one of the Time Lords' greatest secrets: what is Shada? Filming for this story was never finished, and in this version the unfilmed material is completed via animation.

Science Fiction, Adventure, Animation, TV Movie

Tom Baker, Lalla Ward, David Brierly, Christopher Neame, Daniel Hill, Denis Carey