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Overview

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.

Top Billed Cast

  1. Cast 1

    Tom Baker

    The Doctor

  2. Cast 1

    Louise Jameson

    Leela

  3. Cast 1

    John Leeson

    K-9 Mk. I (voice) / Nucleus (voice)

  4. Cast 1

    Michael Sheard

    Lowe

  5. Cast 1

    Brian Grellis

    Safran

  6. Jay Neill

    Silvey

  7. Cast 1

    Edmund Pegge

    Meeker

  8. Cast 1

    Frederick Jaeger

    Professor Marius

Hmmm. This one struggles to get going and has possibly the most un-menacing of antagonists I think I ever saw our time travellers have to face. The "Doctor" (Tom Baker) and "Leela" (Louise Jameson) respond to an emergency message from "Titan" and find when they get there that the crew have been infected by a nasty virus that makes a beeline for them too. Luckily there's the inventive "Prof. Marius" (Frederick Jaeger sans anti-matter this time) who has built himself a new best friend "K9" and who's a dab hand at cloning. The "Doctor" - infected himself, concludes that another him and then a bit...

Status Released

Original LanguageEnglish 

Budget-

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