The Big Bang Theory S12E12 · The Propagation Proposition

The Big Bang Theory

Season 12 · Episode 12 · The Propagation Proposition · 20 min

Penny runs into her ex-boyfriend, Zack, who invites her and Leonard to a dinner to meet his newlywed wife. After the dinner the newlywed couple make an odd proposition to Leonard, which makes Penny to freak out. Also, Raj attempts to mend things with his ex-fiancée, Anu.