When the final season begins, Bull and the TAC team must call upon all their collective experience to locate Bull's daughter when the child is kidnapped, and her abductor warns them not to go to the police. As the team works to find the little girl before the kidnapper's clock runs out, Bull begins to suspect the abductor is someone connected to his previous career in private psychology. This then leads to the Trial Analysis Corporation team heading to court one last time to finalize a negligent homicide defense that will change the nature of their company and their lives forever.