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.
The Big Bang Theory, The Big Bang Theory Season 12
Actor: Kaley Cuoco, Johnny Galecki, Jim Parsons, Simon Helberg, Melissa Rauch, Kunal Nayyar, Mayim Bialik
Quality: HD 720p