The Doctor and Peri have been rescued from the firing squad by the mysterious Sharaz Jek. But he has his own plans for them. And why are they suddenly feeling ill?
Quest roles:
Colin Baker(The Doctor), Christopher Gable(Sharaz Jek), Robert Glenister(Salateen), John Normington(Trevor Sigma), Maurice Roƫves(Stotz), Roy Holder(Krelper), David Neal(President), Barbara Kinghorn(Timmin)