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.

• DirectorPeter Grimwade
• Release15 November 1980
• Genre
  Action / Adventure
• Duration1h 40m
• Budget?
• Revenue?
• Rate
  

  6.333
  3 reviews
• Productions

  BBC