
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.

A suicide attempt turns into a murder investigation when the team must talk a distraught naval officer out of jumping off a roof.

While investigating a death aboard a top-secret naval research ship in the middle of the ocean, the team discovers an abandoned ship and a deadly secret.

As the NCIS team searches 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.