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 is brought on to help the FBI's case against a hacker whom they believe breached air traffic control at LaGuardia Airport. But when Cable learns that the accused is her friend's husband, she risks breaking the law – and defying Bull – to try and prove his innocence.