The Doctor and the MSC crew join forces with the Daleks to mine the parrinium, only to come under attack from the Exxilons.
Quest roles:
John Scott Martin(Dalek Operator), Murphy Grumbar(Dalek Operator), John Abineri(Ranquin), Michael Wisher(Daleks (voice)), Neil Seiler(Radio Operator), Mostyn Evans(High Priest), Duncan Lamont(Dan Galloway), Julian Fox(Peter Hamilton), Joy Harrison(Jill Tarrant), Arnold Yarrow(Bellal), Cy Town(Passerby (uncredited))