The planet Androzani Minor, the distant future. In the planets' caves war rages between government troops and the android warriors of the mysterious Sharaz Jek. But what makes spectrox, the substance they battle to control, so valuable? And how far w... (more)ill the Doctor go to protect his companion?

Barbara Kinghorn, Christopher Gable, David Neal, Martin Cochrane, Maurice Roëves, Robert Glenister, Roy Holder