The Alien Parasite Hypothesis
4x10

The Alien Parasite Hypothesis (2010)

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Season Regulars 7

  1. Johnny Galecki

    Johnny Galecki

    Leonard Hofstadter

  2. Jim Parsons

    Jim Parsons

    Sheldon Cooper

  3. Kaley Cuoco

    Kaley Cuoco

    Penny

  4. Simon Helberg

    Simon Helberg

    Howard Wolowitz

  5. Kunal Nayyar

    Kunal Nayyar

    Rajesh Koothrappali

  6. Melissa Rauch

    Melissa Rauch

    Bernadette Rostenkowski

  7. Mayim Bialik

    Mayim Bialik

    Amy Farrah Fowler

Guest Stars 1

  1. Brian Thomas Smith

    Brian Thomas Smith

    Zack Johnson

Crew 9

Directing

  1.

    Mark Cendrowski

    Director

Production

  1. Steven Molaro

    Steven Molaro

    Co-Executive Producer

  2. Robinson Green

    Production Coordinator

Writing

  1. Chuck Lorre

    Chuck Lorre

    Story

  2. Steve Holland
  3. Steven Molaro
  4. Jim Reynolds

    Jim Reynolds

    Teleplay

  5. Lee Aronsohn

    Lee Aronsohn

    Teleplay

  6. Maria Ferrari

    Maria Ferrari

    Teleplay

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