1212 'The Propagation Proposition' Press Release Posted December 26, 2018

1212 'The Propagation Proposition' Press Release

CBS has released the synopsis for the January 10 episode of The Big Bang Theory, "The Propagation Proposition". Brian Thomas Smith reprises his role as Penny's ex-boyfriend, Zack, in the episode.

The Propagation Proposition – Penny’s ex-boyfriend, Zack (Brian Thomas Smith), 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 (Rait Gupta), on THE BIG BANG THEORY, Thursday, Jan. 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.

The Big Bang Theory's final season is currently taking a break over the Christmas/New Year holidays. A rerun of "The Planetarium Collision" airs this Thursday, December 27. The show returns Thursday, January 3 with "The Paintball Scattering".

More about the episode

The Propagation Proposition
Season 12, Episode 12 - Aired January 10, 2019

Penny's ex-boyfriend, Zack (Brian Thomas Smith), 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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