2009-11-15 7.9/10
Overview
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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.
Director : Graeme Harper
Writer : Phil Ford, Russell T Davies
Cast
David Tennant
Lindsay Duncan
Peter O'Brien
Sharon Duncan-Brewster
Gemma Chan
Aleksandar Mikic