
Chris O'Donnell and LL Cool J star in this second show in the "NCIS" franchise, focusing on the high-stakes world of the Office of Special Projects (OSP) in Los Angeles. Highly trained agents use the most-advanced technologies available and go under cover to apprehend criminals deemed a threat to national security. Special Agent G. Callum can transform himself into whoever he needs to be to infiltrate criminal factions. His partner, former Navy SEAL Sam Hanna, is a surveillance specialist who uses state-of-the-art equipment to monitor field agents and feed them information.

The team partners with the FBI when a Marine dies after being exposed to a rare nerve gas; Deeks shares his dream to quit law enforcement and open a bar.

The team investigates the murder of a federal prison inmate who was the adopted daughter of a notorious counterfeiter; Callen is summoned by the ATF Internal Affairs board to discuss Anna Kolcheck's actions.

Sam is shot during a firefight with the cartel; an interrogated suspect reveals new information on the whereabouts of Spencer Williams, the man who kidnapped Mosley's son.

Despite several team members having reservations, the team travels to Mexico to locate and rescue Mosley's son.