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Watch Doctor Who
Season 4 Episode 5

2005
8.7
Doctor Who
Season 4 Episode 5
2005
8.7

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Doctor Who S4 Episode 5: The Poison Sky
S4 Episode 5: The Poison Sky
(3 sources)
As poison gas suffocates the Earth's population, the Doctor and UNIT team members work to eliminate the threat.
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Synopsis
As poison gas suffocates the Earth's population, the Doctor and UNIT team members work to eliminate the threat.
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