On Thursday’s episode titled “The Convergence Convergence,” chaos ensues when Leonard’s recently divorced parents, Alfred (Judd Hirsch) and Beverly (Christine Baranski), and Sheldon’s devoutly religious mother, Mary (Laurie Metcalf), come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system, on the ninth season finale of “The Big Bang Theory.”
On an all-new “The Big Bang Theory,” Thursday, May 12th at 8/7c on the CBS Television Network
