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The Big Bang Theory
7:00 pm - 7:30 pm Wednesday, October 21
The Propagation Proposition
Season 12 · Episode 12
Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu.
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The Big Bang Theory Cast
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Penny
Leonard Hofstadter
Sheldon Cooper
Howard Wolowitz
Rajesh Koothrappali
Bernadette Rostenkowski
Amy Farrah Fowler
Zack
Anu
Dr. Koothrappali
Marissa
Greg
Bob The Boat Neighbor
Dr. V.M. Koothrappali
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