When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley's fear of the dark leads to opportunity and conflict for Howard, Bernadette and Stuart.
Guest Cast
Pamela Adlon
voices Halley
Cast Appearances
Kaley Cuoco
as Penny
Episode Discussion
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