Guest Star: Professor Frances H. Arnold
The Laureate Accumulation
Season 12, Episode 18 - Airs April 4, 2019
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.
Appeared as Herself