When Bull joins the district attorney in a case against Kara Clayton, who claims she killed her billionaire husband in self-defense, tensions run high when he learns that his on-again, off-again romantic interest, Diana Lindsay, is defending the widow. Also, Chunk makes a decision about his future.

Bull takes a psychologist friend, Dr. Donovan Benanti, as a client when the therapist is sued for malpractice following a patient’s deadly rampage. As Bull worries a trial loss could set new precedent regarding doctor-patient confidentiality, he aims to convince the jury that clinicians aren’t directly responsible for their patients’ actions

Bull's team takes on a seemingly unwinnable case; a mute man faces the death penalty if he's found guilty of murder and arson; Bull is stunned to learn that his ex-wife is remarrying.