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.

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Cast

Episode cast overview, first billed only:
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Aleksandar Mikic ...
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Maggie Cain (as Sharon Duncan Brewster)
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Lily Bevan ...
Emily
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Adelaide's father (as Charlie De'Ath)
Rachel Fewell ...
Anouska Strahnz ...
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Storyline

The Doctor arrives on Mars in the year 2059 and joins the first human Earth colony led by Adelaide Brooke. The day he arrives is also the day history records the entire settlement destroyed in an unknown cataclysm with all members of the settlement being killed. Everyone soon realizes that colonists are being infected by some unknown agent and are being transformed into zombie-like creatures. For reasons that are eventually explained, The Doctor is not prepared to save them and tells Brooke that she has to die. He quite torn by this decision and eventually chooses another path, one that will have other repercussions for him in the future. Written by garykmcd

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TV-PG | See all certifications »

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Release Date:

19 December 2009 (USA)  »

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Did You Know?

Trivia

Russell T. Davies originally wanted Helen Mirren for the role of Adelaide Brooke. See more »

Goofs

Captain Adelaide Brooke's obituary shared that her birthday was the 12 May 1999, and stated that she lost her parents after the Dalek invasion in 2008 at the age of 10. In 2008, she would have been 8 or 9. See more »

Quotes

[repeated line]
Gadget: Gadget-gadget!
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Connections

Featured in Doctor Who Confidential: Is There Life on Mars? (2009) See more »

Soundtracks

Doctor Who Theme
(uncredited)
Written by Ron Grainer
Arranged by Murray Gold
Performed by BBC National Orchestra of Wales
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User Reviews

 
About the earlier comment of continuity.....
17 November 2009 | by (United Kingdom) – See all my reviews

invisibleskidmark, you obviously did not watch the "Stolen Earth" or "Journey's End" closely because the Daleks in the Medusa Cascade were NOT part of the Time War.

At the end of the "Evolution of the Daleks" (series 3) the last of the Cult of Skaro (Dalek Caan) did an emergency temporal shift which SENT HIM BACK INTO THE TIME WAR where he consequently rescued Davros, creator of the Daleks, and lost his mind (went mad) in the ensuing ability to see all of time and space. The Time War was timelocked and Caan somehow broke through it. The incident at the Medusa Cascade happened and lost planets returned to their appropriate places and times. It became a FIXED point in time/space.

There was no continuity problem regarding the Medusa Cascade incident as we saw that the whole of Earth was celebrating the return of Earth to the Solar system in "Journey's End" I suggest before commenting on continuity that you remove the finger off the fast forward button....


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