After terrorists kill a state department employee and a plastic surgeon, the team searches for the only witness who can identify the killers' surgically altered faces.

Sam goes undercover as a prisoner to track down a terrorist group responsible for several bombings around the world.

When an attempted robbery takes place at a secure facility on a Marine base, Kensi must determine what the thief intended to steal.

The NCIS team investigates the murder of a former Navy intelligence officer who had been living a double life and traveling overseas on false passports.