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: 5.5
Score: 6.5
Score: 5.2
Score: 7.0
Score: 6.4
Score: 5.7
Score: 6.7
Score: 6.0
