An energy drain traps the Third Doctor and Sarah Jane Smith on the planet Exxilon with its hostile natives, causing the travellers to make an uneasy alliance with a Marine Space Corps expedition and a squadron of Daleks. The key to escape for all of them lies at the heart of a powerful and mysterious lost city, but only after a series of deadly traps.

Cast:Jon Pertwee, Elisabeth Sladen, Duncan Lamont, John Abineri, Joy Harrison, Julian Fox,

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

country:United Kingdom,

Production:BBC,