The barren planet Exxilon, some time in the future. The TARDIS is forced down by a total power failure and the Doctor and Sarah meet a stranded Earth crew who came here to mine for priceless medical supplies. But what is causing the power failures? And why have the Daleks come here too?
Quest roles:
John Scott Martin(Kriz), Murphy Grumbar(Dalek Operator), Terry Walsh(Crew Member (uncredited)), John Abineri(Richard Railton), Michael Wisher(Ranjit (voice, uncredited)), Max Faulkner(Corporal Adams), Neil Seiler(Commander Stewart), Mostyn Evans(High Priest), Duncan Lamont(Dan Galloway), Julian Fox(Peter Hamilton), Joy Harrison(Jill Tarrant), Cy Town(Haemovore (uncredited))