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S04E10

The Alien Parasite Hypothesis

• 20:00 • CBS

• 2010-12-09

The Alien Parasite Hypothesis (S04E10) is the tenth episode of season four of "The Big Bang The... More The Alien Parasite Hypothesis (S04E10) is the tenth episode of season four of "The Big Bang Theory" released on Thu Dec 09, 2010. The Big Bang Theory stars and .

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