A Marine is murdered in Washington and the NCIS team investigating finds evidence that links the man to Los Angeles. The NCIS Office of Special Projects is assigned to the case involving the dead Marine and Agent Gibbs and McGee travel form Washington to assist them in solving this murder of a marine.moreless
Callen, who has been recovering from severe injuries, returns to the NCIS Office of Special Projects and immediately joins his team-mates in solving a kidnapping case which might have national security implications.
When a man is found dead, the team is assigned to find if anyone else has the classified information he was working on. They discover that a well-known assassin, who has a history with Director Vance, murdered him.
The team must put their holiday decorations on hold to investigate a Marine's death by his cell phone blowing up. They begin to realize that they need to locate his former unit to protect them from further explosions.
When a Petty Officer in the linguistic unit in murdered at a strip club, the team is assigned to find out if this is a coincidence or a breach. The investigation finds a connection to Sam and his past. Hetty takes a closer look at the team and how they are handling the pressures of the job.moreless
When a lieutenant commander's death appears to be a suicide, the team is ordered to investigate to determine if the top-secret project he was working on has been compromised. Nate is assigned to partner with Kensi during this operation.