| The Big Bang Theory - S12E20 - The Decision Reverberation.webm|
Plot Summary: Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the principal investigator on a plasma physics study.
Release Date: 2019-04-25
Directors: Chuck Lorre,Bill Prady
Writers: Chuck Lorre,Bill Prady
Starcast: Johnny Galecki,Jim Parsons,Kaley Cuoco