Doctor Who (2005– )
26 user 10 critic

The Waters of Mars 

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.


Graeme Harper

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Episode cast overview, first billed only:
David Tennant ... The Doctor
Lindsay Duncan ... Adelaide Brooke
Peter O'Brien ... Ed Gold
Aleksandar Mikic Aleksandar Mikic ... Yuri Kerenski
Gemma Chan ... Mia Bennett
Sharon Duncan-Brewster ... Maggie Cain (as Sharon Duncan Brewster)
Joplin Sibtain ... Tarak Ital (as Chook Sibtain)
Alan Ruscoe ... Andy Stone
Cosima Shaw ... Steffi Ehrlich
Michael Goldsmith ... Roman Groom
Lily Bevan Lily Bevan ... Emily
Max Bollinger ... Mikhail
Charles De'Ath ... Adelaide's father (as Charlie De'Ath)
Rachel Fewell Rachel Fewell ... Young Adelaide
Anouska Strahnz Anouska Strahnz ... Ulrika Ehrlich


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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Russian | English

Release Date:

19 December 2009 (USA) See more »

Company Credits

Production Co:

BBC Wales See more »
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Technical Specs


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Did You Know?


The space suit the Doctor uses is from 'The Satan Pit'. See more »


Almost every obituary repeats its opening paragraph as the first lines of its last visible paragraph. See more »


The Doctor: All I'm saying is, bikes! Little fold away bikes, don't weigh a thing!
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Featured in Doctor Who: Twice Upon a Time (2017) See more »


Doctor Who Theme
Written by Ron Grainer
Arranged by Murray Gold
Performed by BBC National Orchestra of Wales
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Frequently Asked Questions

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User Reviews

Sorry, but no
17 November 2009 | by Jeremy-93See all my reviews

I wanted to like this, I really did. The BBC were trailing it as just the kind of episode I wanted to see - taut, scary, grown-up, sombre, intelligent sf. And if you'd cut it by about half, re-edited the remainder, and come up with some new stuff, you'd hit the jackpot. I like David Tennant's Doctor more and more, and will miss him in the role - he has a near-perfect combination of gravitas and impatience, and can shift in a moment from excessively cheerful to deadly serious to alarmingly peculiar, like no-one since Tom Baker. And I like any episode that doesn't turn on conventional sexual tension imported from Buffy. Trouble is, the script just wasn't good enough. Scenes went on and on, with diminishing returns. Doomy, adolescent self-indulgence got substituted for seriousness. Scary gave way to vaguely embarrassing. I started feeling sorry for Lindsay Duncan without even being sure whether she was feeling sorry for herself or had got sucked into the corporate self-regard of a show that badly needs to be stripped back to basics. I prefer to be optimistic that Steven Moffat is the man for the job, given the very high quality of the eps he's written. Lots of hard work went into 'The Waters of Mars', but the writing is hollow.

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