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Watch Doctor Who: The Invisible Enemy (1977) Online

  • 7.2/10
  • RUNTIME: 1h 40m
  • COUNTRIES: United Kingdom
  • Subtitles: English

A three-man rocket crew are nearly done with their mission to Titan Base until a course change puts the rocket in the path of a strange cloud in space. By the time they arrive, they have come under the control of a sentient virus which threatens the galaxy. When the TARDIS picks up an emergency message, it flies into the cloud, infecting the Doctor. To save himself and others, he must undertake a dangerous journey.