Lights off
Lights on

The Big Bang Theory Season 12 Episode 12 : The Propagation Proposition

Loading...
Video ▶
Loading...
Loading...

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.

Loading...

Episode Guide