Season 4 · Episode 10 of 24
Aired Dec 9, 2010
The Alien Parasite Hypothesis
Thu, Dec 9, 2010
Streaming on Netflix, Hulu, HBO Max, Disney+ + 5 more
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Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
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Airs
Thu, Dec 9, 2010
Show
The Big Bang Theory
279 episodes
Episode
S4 · E10
in The Big Bang Theory