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The Big Bang Theory: 12x13

The Propagation Proposition

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.

The Big Bang Theory: 12×13
The Big Bang Theory: 12×13
Jan. 17, 2019
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