Evidence from the stabbing of a Marine Sergeant leads Torres to meet his father, who left when he was a child.

The team investigates a biker killed in a hit-and-run; Gibbs prepares to testify against a financial adviser who stole millions from his Navy clients.

NCIS tracks a stolen laptop to the uncle of a young boy, Phineas, Gibbs' former neighbour.

When members of an NCIS Regional Enforcement Action Capabilities Training Team are killed during an explosion, NCIS Special Agent Jessica Knight, the lone surviving member, helps crack the case using high-tech body armour.

While pursuing a dangerous arms dealer, the team is shocked when Bishop is implicated in an old NSA leak; Gibbs and Marcie realise the killer they've been tracking may be onto them.

As the NCIS team search for Gibbs after wreckage from his boat is discovered, they find out he was tracking a serial killer with journalist Marcie Warren, who wrote an exposé on him.

While trying to find the serial killer Gibbs was after, the NCIS team discovers another person has been tracking the case as well.

Gibbs and Parker go on a road trip to find one of the serial killer's victims; Agent Knight goes under cover at a large manufacturing company with ties to the murders.

Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.

The NCIS team investigates the death of a Navy commander whose body suddenly explodes before Jimmy can examine it.

NCIS investigates the death of a beloved Navy commander who trained some of the top athletes in the country.