The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it – by sacrificing the Doctor and Romana.
Quest roles:
John Leeson(K9 (voice)), John Abineri(Richard Railton), Philip Madoc(Solon), Neil McCarthy(Thawn), Carl Rigg(Varlik), Frank Jarvis(Skart), Glyn Owen(Rohm-Dutt)