Doctor Who (2005– )
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The Poison Sky 

With planet Earth choking under the poison sky, the Doctor must stop the Sontarans' threat to the planet.



, (character: "The Sontarans")

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Episode cast overview, first billed only:
... The Doctor
... Donna Noble
... Martha Jones
... Rose Tyler
... Wilfred Mott
... Sylvia Noble
... Luke Rattigan
Rupert Holliday-Evans ... Colonel Mace
... General Staal
... Commander Skorr
... Private Harris
... Private Gray
... Ross Jenkins
Meryl Fernandes ... Female Student
... Male Student


The Sontarans launch the attack with their poison gas slowly encircling the Earth. They've also taken the TARDIS to its headquarters but don't realize that Donna is inside. The Doctor realizes that the Sontarans have cloned Martha. He knows that fighting the Sontarans is of little use as they never surrender and are prepared to fight until they win. He decides to try and burn the poison gas that now encircles the Earth and with the help of the Sontarans teleportation system, send them a little surprise as well. At the end of it all, both Martha and Donna have to decide if they want to stay with the Doctor. Written by garykmcd

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Parents Guide:



Release Date:

30 May 2008 (USA)  »

Company Credits

Production Co:

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Technical Specs


(50 episodes)

Sound Mix:

(Dolby 5.1)
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Did You Know?


Susie Liggat produced this episode in order to give Phil Collinson time off. See more »


All through the atmos fog segments outside Donnas house there is a car with its lights on opposite her mothers car but when the fog is clearing it is gone. See more »


Wilfred Mott: I won't tell her. Best not... just keep it as our little secret, eh?
Donna Noble: [brief smile] Yeah.
Wilfred Mott: And you go with him, that wonderful Doctor. You go and see the stars...
[emotion in his voice]
Wilfred Mott: Then, bring a bit of them back for your old Gramps.
[tears in her eyes, nods and gets up to leave; stops to hug him, kisses him on the head]
Donna Noble: Love you.
[walks away; trying not to cry]
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Crazy Credits

SPOILER: Billie Piper receives screen credit as Rose Tyler, even though her appearance in the episode lasts less than one second. See more »


Featured in Doctor Who: The Eleventh Hour (2010) See more »


Doctor Who Closing Credits
Written by Ron Grainer
Performed by BBC National Orchestra of Wales
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User Reviews

It's the scale of it

"It's the scale of it". This quote from Wilf, who is fast becoming my favorite character of the new series who isn't an alien who hops around time and space in a police phone box, perfectly describes my problem with this episode and with much of the new series. Perhaps for lack of a budget, the classic episodes rarely if ever dared set up a catastrophe on this scale. I really hate the idea of humanity being threatened every couple of weeks while the Doctor saves them. It's better if he's stopping plans that are being laid early or something of the sort. It's like the Pertwee era on steroids or something. At least the aliens didn't hover over London with nobody noticing them again.

However, there was much to love in "The Poison Sky" with the Sontarans getting their butts kicked, more Wilf action (the only reason I'll be in favor of more Earth stories this season is seeing Bernard Cribbins in the role again), and some fine action scenes and special effects.

The best part of the episode though, was what some would term 'fanwank' and those were the references. They weren't too obvious, after all, why WOULDN'T the Doctor mention the Brigadier?! (Stranded in Peru? Could we be seeing the return of the Brigadier sometime?) The rest of the references were pretty funny too, in particular "Are you my mummy?" If you didn't laugh at that you're either not a fan or you just don't have a sense of humor.

I liked this episode quite a bit, and this story as a whole. It is definitely the weakest Sontaran story but the competition is strong so I'm not complaining. Good stuff, just wish we could have fewer stories where the entire universe is in peril (just Earth, eh? Still too big a scale).


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