Big Bang theory 12×12 is title The Propagation Proposition. Penny’s ex-boyfriend, Zack (Brian Thomas Smith), and his wife want a baby.

Big Bang theory 12×12 promo images

See Also: The Gifted season 2 episode 11 meMento

synopsis

STORY BY: Chuck Lorre, Steve Holland, Jeremy Howe

TELEPLAY BY: Maria Ferrari, Dave Goetsch, Eric Kaplan

DIRECTED BY: Mark Cendrowski

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.

Promo Trailer

REGULAR CAST:

Johnny Galecki (Leonard)

Jim Parsons (Sheldon)

Kaley Cuoco (Penny)

Simon Helberg (Wolowitz)

Kunal Nayyar (Koothrappali)

Mayim Bialik (Amy)

Melissa Rauch (Bernadette)

RECURRING CAST:

Brian George (Dr. Koothrappali)

Brian Thomas Smith (Zack)

Rati Gupta (Anu)

Lindsey Kraft (Marissa)



GUEST CAST:

Shay Ali (Greg)

Chip Chinery (Bob)