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Doctor Who

Season 4, episode 5. This player now records resume state for the active profile so browse, account, and detail pages can bring you back here quickly.

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S4 E5

The Poison Sky (2)

The Sontarans continue their evil plot and begin to "choke" the Earth. The Doctor and Donna, now teamed with Martha have to stop them! Can they save Earth before it's too late?

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Series 4

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Episode 1: Partners in Crime

Episode 2: The Fires of Pompeii

Episode 3: Planet of the Ood

Episode 4: The Sontaran Stratagem (1)

Episode 5: The Poison Sky (2)

Now playing

Episode 6: The Doctor's Daughter

Episode 7: The Unicorn and the Wasp

Episode 8: Silence in the Library (1)

Episode 9: Forest of the Dead (2)