
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.

Determined to find Ziva, Tony follows leads in Israel; Gibbs and the team continue their search for Parsa and his expanding terrorist ring.

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.

When a Navy lieutenant goes missing, the team uses Twitter to help solve the case; McGee's badge is missing.

The team hopes to avoid an international incident when an American officer is killed on a British ship.