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7.9

223 Reviews

In a Mars base, the inhabitants are being infected by a mysterious water creature which takes over its victims. The Doctor is thrust into the middle of this catastrophe, knowing a larger one is waiting around the corner.

Cast

  • David Tennant

  • Lindsay Duncan

  • Peter O'Brien

  • Sharon Duncan-Brewster

  • Gemma Chan

  • Aleksandar Mikic

  • Michael Goldsmith

  • Cosima Shaw

  • Joplin Sibtain

  • Alan Ruscoe

  • Lily Bevan

  • Max Bollinger

  • Charles De'Ath

  • Rachel Fewell

  • Anouska Strahnz

  • Zofia Strahnz

  • Paul Kasey

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