World Class Action. Fielding cases from local cyber-terrorists to international pirates and elusive serial killers, the NCIS team keeps adventure in the line of fire. Led by Special Agent Jethro Gibbs (Mark Harmon), this expert squad hunts down humanity's most notorious enemies in the name of freedom and justice for all. Co-starring Michael Weatherly, Sean Murray, Pauley Perrette, Rocky Carroll, Brian Dietzen, David McCallum and Emily Wickersham, this 6-disc, 24 episode set showcases suspense at its nail-biting, pulse-pounding best. For the first time on DVD and Blu-ray, NCIS Season 12 is reporting for duty.