"School for Scandal"-- When Bull joins the district attorney in a case against Kara Clayton (Minka Kelly), who claims she killed her billionaire husband in self-defense, tensions run high when he learns that his on-again, off-again romantic rival, Diana Lindsay (Jill Flint), is defending the widow. Also, Chunk makes a decision about his future, on the second season premiere of BULL, Tuesday, Sept. 26 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Minka Kelly as Kara Clayton and Freddy Rodriguez as Benny Colón Photo: Jeffrey Neira/CBS ©2017 CBS Broadcasting, Inc. All Rights Reserved