
Naval Criminal Investigative Service Special Agent Leroy Jethro Gibbs leads a group of colorful personalities in investigating crimes -- ranging from murder and espionage to terrorism -- that have evidence connected to Navy and Marine Corps personnel. The team includes MIT graduate Timothy McGee, Ellie Bishop, who specializes in international threat assessment, charismatic and unpredictable Nick Torres, and forensic psychologist Jack Sloane. Dr. Donald "Ducky" Mallard brings his vast experience in forensics into play to help solve cases.

When the enlisted son of a preacher, who was a colonel, is found dead, the team thinks he may be the victim of a hate crime; Gibbs' father visits for the holidays.

When a Navy pilot is found dead in a secluded area, the team must battle a no-nonsense attorney with a hidden agenda.

Agent Knight's past resurfaces when her ex-boyfriend, a National Parks Service agent, teams up with NCIS to investigate a campsite murder.

NCIS investigates the death of a college student who was killed while running across the street and had connections to McGee's wife.