
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.

The team turns to a blind photographer (John Billingsley) to use his heightened senses of hearing and smell to re-create a crime scene and track down a petty officer's killer.

Gibbs leads the investigation into a murder victim found in a taxi headed to NCIS headquarters; Jenny discovers a secret about her past.

Upon the director's return from a European junket, the team's secrets unravel; a merciless drug dealer holds Dinozzo and his girlfriend captive.

Gibbs must face the reality of his actions after he assists Ziva with "the one thing" she said she would need to take care of before returning to her family.