BierdopjeV3 Alpha nu beschikbaar. Wil je helpen? Kijk dan hier

The Big Bang Theory - The Propagation Proposition

Seizoen: 12 - Aflevering: 12 / 267 - Eerst uitgezonden: 10 januari 2019 - Episode ID: 1620717

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.