Arriving on the barren world of Androzani Minor, the Doctor and Peri find themselves embroiled in a long running, literal underground war. At the heart of the conflict is a substance called Spectrox - both valuable and deadly! The Doctor & Peri wind up being poisoned by the material, which is killing them slowly and painfully unless they can find a cure. As the conflict heats up and the situation gets more desperate, the Doctor realises time is running out - both for Peri and himself...
Peter Davison
as Fifth Doctor
Colin Baker
as Sixth Doctor
Nicola Bryant
as Peri Brown
Christopher Gable
as Sharaz Jek
John Normington
as Morgus
Barbara Kinghorn
as Timmin
David Neal
as The President
Maurice Roëves
as Stotz
Roy Holder
as Krelper
Robert Glenister
as Salateen
Anthony Ainley
as The Master
Matthew Waterhouse
as Adric
