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Season 12 Episode 12
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Season 12 Episode 12
The Propagation Proposition
Jan 10, 2019 on CBS at 8:00 PM
Summary
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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Guest stars
Brian George, Brian Thomas Smith, Chip Chinery, Lindsey Kraft, Rati Gupta, Shay Ali
