Arriving on Space Station Nerva in its distant past, the Doctor, Sarah and Harry find its crew threatened by a mysterious plague. Discovering that things are not as they seem, they uncover a Cyberman plot to destroy Voga, planet of gold.

Cast:Tom Baker, Elisabeth Sladen, Ian Marter, Ronald Leigh-Hunt, William Marlowe, Kevin Stoney,

Genre:Action, Adventure, Drama, Science Fiction, TV Movie,

country:United Kingdom,

Production:BBC,