The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander. And there is no sign of the fifth segment of the Key to Time.
Quest roles:
John Leeson(K9 (voice)), John Abineri(Ranquin), Philip Madoc(Fenner), Neil McCarthy(Thawn), Carl Rigg(Varlik), Frank Jarvis(Skart)