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
The Doctor
Lindsay Duncan
Captain Adelaide Brooke
Peter O'Brien
Ed Gold
Sharon Duncan-Brewster
Maggie Cain
Gemma Chan
Mia Bennett
Aleksandar Mikic
Yuri Kerenski
Michael Goldsmith
Roman Groom
Cosima Shaw
Steffi Ehrlich
Joplin Sibtain
Tarak Ital
Alan Ruscoe
Andy Stone
Lily Bevan
Emily
Max Bollinger
Mikhail
Charles De'Ath
Adelaide's Father
Rachel Fewell
Young Adelaide
Anouska Strahnz
Ulrika Ehrlich
Zofia Strahnz
Lisette Ehrlich
Paul Kasey
Ood Sigma
Recommendations
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Doctor Who: A Christmas Carol
Doctor Who: Planet of the Dead
Doctor Who: Voyage of the Damned
Doctor Who: The Runaway Bride
Doctor Who: The Time of the Doctor
Doctor Who: The Next Doctor
Doctor Who: The Night of the Doctor
Doctor Who: The Husbands of River Song
Doctor Who: Twice Upon a Time
Polar Bear - Spy on the Ice
Doctor Who: City of Death
Te Presento a Laura
Doctor Who: The Doctor, the Widow and the Wardrobe
Doctor Who: The Day of the Doctor
Doctor Who: The Snowmen
Jungle 2 Jungle
Doctor Who: Last Christmas
Miracle on 34th Street
The Boys in the Band