On the planet Alzarius in the alternate universe of E-Space, the Doctor, Romana and K9 find survivors of a crashed starliner, strange creatures lurking in the marshes and a genetic riddle which stretches back centuries.
Tom Baker
Lalla Ward
Matthew Waterhouse
John Leeson
George Baker
Score: 5.3
Score: 7.9
Score: 8.0
Score: 6.8
Score: 7.0
Score: 6.3
Score: 5.8
Score: 7.6
