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Episode Details: The Alien Parasite Hypothesis

Image of the episode The Alien Parasite Hypothesis

The Alien Parasite Hypothesis

Series: The Big Bang Theory

Season: Season 4

Episode Number: 10

Air Date:

Duration: 20 min

Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.

★ 7.3 / 10 (44 votes)

Cast and Guests

Portrait of Mark Cendrowski

Mark Cendrowski

Director
Portrait of Chuck Lorre

Chuck Lorre

Story
Portrait of Steven Molaro

Steven Molaro

Story
Portrait of Jim Reynolds

Jim Reynolds

Teleplay
Portrait of Steven Molaro

Steven Molaro

Co-Executive Producer
Portrait of Steve Holland

Steve Holland

Story
Portrait of Maria Ferrari

Maria Ferrari

Teleplay
Portrait of Lee Aronsohn

Lee Aronsohn

Teleplay
Portrait of Brian Thomas Smith

Brian Thomas Smith

Zack Johnson

Streaming Platforms for The Big Bang Theory

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