Doctor Who (2005– )
10 user 5 critic
Soon after bumping into old friend Jack Harkness, Martha and The Doctor head off to Malcassairo, a distant planet where an old professor will do anything he can to keep his people alive...


Graeme Harper




Episode complete credited cast:
David Tennant ... The Doctor
Freema Agyeman ... Martha Jones
John Barrowman ... Captain Jack Harkness
Derek Jacobi ... Professor Yana
Chipo Chung ... Chantho
René Zagger ... Padra (as Rene Zagger)
Neil Reidman ... Lieutenant Atillo
Paul Marc Davis ... Chieftain (as Paul Marc Davies)
Robert Forknall ... Guard
John Bell ... Creet
Deborah MacLaren Deborah MacLaren ... Kistane
Abigail Canton Abigail Canton ... Wiry Woman
John Simm ... The Master


The Doctor and Martha arrive in present day Cardiff to refuel the TARDIS and are inexplicably thrust to a distant planet 100 trillion years into the future. When they arrive they realize they have an unexpected passenger in Captain Jack Harkness who has been patiently waiting for the Doctor's return since the mid-19th century. On the planet they eventually meet Professor Yana who is running the 1000-year old Utopia project, the aim of which is to relocate the human-like creatures to a new planet, away from the outsiders who they fear they will become if they don't leave. When Prof. Yana has need of someone to make repairs in a room in which no one can survive, the Doctor has the perfect candidate. The Professor is not what he seems to be however and Martha notices he has a fob watch much like one the Doctor recently made use of. Written by garykmcd

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Parents Guide:

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Release Date:

16 June 2007 (UK) See more »

Company Credits

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Technical Specs


| (50 episodes)

Sound Mix:

Dolby Digital (Dolby 5.1)


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Did You Know?


This is the first time in the revived series that the Doctor uses his sonic screwdriver in a vertical fashion, reminiscent of his old sonic screwdrivers. See more »


When the gates at Silo 16 are opened to let the Doctor into the base, a neon yellow safety jacket is briefly visible in the background through a fence. See more »


The Doctor: I'm a bit of a hermit really.
The Professor: A hermit with friends?
The Doctor: Mmm. Hermits United. We get together every 10 years and swap stories about caves. It's good fun. For a hermit.
See more »


Featured in Friday Night with Jonathan Ross: Episode #12.8 (2007) See more »


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

Excellent toppings on a cardboard pizza
3 January 2018 | by kreniighSee all my reviews

Doing a slow binge of the entire show in 2017, I knew nothing about this episode going in, and about halfway through I was bored and watching it mainly on momentum. The story was junk sci-fi, sloppy and poorly explained, evoking a concept as mind-bending as "the end of time" and then filling it with mugging Road Warrior extras and the cast of Les Miserables. What does it even mean that it's the end of time? It really felt like another "Lazarus Experiment" or "Idiot Lantern".

Which is not to deny the greatness of parts of it -- the performances of the main cast, the brilliant setup for the 3-parter, etc. -- which were fine and tasty, but stuck onto an underlying premise as uninvolving as a cardboard pizza crust

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