Season Four

The Poison Sky

Episode #: 405
U.S. Air Date: 05.30.08
U.K. Air Date: 03.05.08
Written By:
Helen Raynor
Directed By:
Douglas Mackinnon
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As the Sontarans launch their attack on Earth by unleashing poison gas into the atmosphere, the Doctor must deal with a missing TARDIS and a mole in his midst.
U.S. air dates are in MM.DD.YY form.   U.K. air dates are in DD.MM.YY form.