The Big Bang Theory Season 12 Episode 18
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.
Serie: The Big Bang Theory
Director: Mark Cendrowski
Guest Star: Ellen DeGeneres, Frances H. Arnold, George F. Smoot, Joshua Malina, Kal Penn, Kip Thorne, Pamela Adlon, Sean Astin