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Doctor Who, Survival of the Fittest Episode guide

  1. Episode 4

    4/4 With time running out for the Vrill, Klein has to confront their greatest threat alone.

    First broadcast: 29 May 2012

    Image for Episode 4 Not currently available
  2. Episode 3

    3/4 The Time Lord and Doctor Klein get to grips with the fate confronting the Vrill.

    First broadcast: 28 May 2012

    Image for Episode 3 Not currently available
  3. Episode 2

    2/4 The Time Lord transports his sinister companion to save a species from extinction.

    First broadcast: 25 May 2012

    Image for Episode 2 Not currently available
  4. Episode 1

    1/4 The Time Lord learns more about his dubious companion, the Nazi scientist.

    First broadcast: 24 May 2012

    Image for Episode 1 Not currently available

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