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Gibbs and the NCIS team have to find answers regarding Tony's months-long assignment when an NCIS agent is found dead.
The NCIS team uncovers a startling surprise after a young Marine shows up to his homecoming party with a fatal stab wound.
The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy Lieutenant.
The NCIS team searches for the person and motive behind a contract killer targeting a Navy Lieutenant Commander.
Meanwhile, Abby uncovers new information about her family after undergoing tests for a kidney donation.
When a coast guard officer is gunned down on a cargo vessel, the NCIS team searches for the killer, but finds a Lebanese family seeking refuge on American soil.
Meanwhile, Tony and McGee try and find the perfect woman for Gibbs.
An NCIS case changes from accidental death to murder when evidence reveals that a Navy lieutenant died of forced over-hydration. Meanwhile, Gibbs meets Ducky's new love interest.
The NCIS team searches for answers when the current husband of both Gibbs's and Fornell's ex-wife is suspiciously kidnapped.
The NCIS team uncovers a discrepancy with DNA remains when investigating the crash of a military plane that had been transporting caskets.
As the NCIS team continues its search for a missing Marine, Gibbs and Ziva travel to her last known whereabouts in Afghanistan. Tony reveals his deepest fears and Gibbs is forced to relive events from his past.
After Anthony DiNozzo, Sr. is found in a car with a dead body in the trunk and no memory of the previous night, the NCIS team must figure out if he is capable of murder. Meanwhile, Tony .. show full overview
When a Navy captain is killed in a hotel room, NCIS must track down and protect his very pregnant companion from unknown assailants. Meanwhile, Jimmy has problems of his own when he brings his future father-in-law to work.
The investigation into the murder of a Navy Commander leads the NCIS team to E.J. Barrett’s whereabouts.
When a Navy lieutenant commander is found dead in a building under construction, NCIS must search for a killer while dealing with interruptions from her distraught detective husband. Meanwhile, Ray’s return has Ziva thinking about her future.
During a routine stop for his morning coffee, Gibbs finds himself staring down the barrel of a gun, forcing him to question choices he has made in the past and present
When a Navy captain is found dead with an unusual costume hidden under his uniform, NCIS uncovers a secret society of real-life super heroes and must track down the villain.
Gibbs clashes with Dr. Samantha Ryan (guest star Jamie Lee Curtis) over the truth behind a navy reservist's possible suicide
Top-secret clearance from a Naval research laboratory is jeopardized when the murder of a Chief Petty Officer is connected to an international arms dealer. Meanwhile, Probationary Agent .. show full overview
The Secretary of the Navy partners Gibbs with Dr. Samantha Ryan after top secret information is leaked by someone on the inside.
A case hits close to home when the lead suspect in the murder of a petty officer is Director Vance's brother-in-law.
Following the murder of a Marine, Tony and Ziva join Ziva’s longtime friend and mentor in Columbia in a search for a missing Marine Lieutenant and Navy Chaplain. Meanwhile, Jimmy Palmer decides who will be his best man.
After a warehouse fire reveals missing Navy documents, posing a potential threat to national security, the NCIS team joins the Baltimore P.D. investigation, reuniting Tony with a boy from his past.
The NCIS investigation of a fire on a Navy vessel reveals evidence that elevates security at all U.S. Navy facilities worldwide. Meanwhile, DiNozzo and Ziva travel to Italy when an explosive device is found hidden on a Navy ship.
The NCIS team analyzes what secrets could be in the hands of a terrorist targeting the Navy when a high-tech bug is found inside a probationary agent’s tooth. Meanwhile, the festivities .. show full overview
Terrorism shakes the foundations of the Navy and NCIS to such an extent that Gibbs and the team face surprises that will devastate them.
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