Shaken by terrorism, the NCIS team faces devastating surprises on the ninth season finale, which features Palmer's wedding and the culmination of the arson-terror arc.
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.
The NCIS investigation of a fire on a Navy vessel reveals evidence that elevates security at all U.S. Navy facilities worldwide.
A warehouse fire compromises Navy documents and thus poses a threat to national security, so the NCIS team joins the Baltimore PD's investigation.
Following the murder of a Marine, Tony and Ziva join Ziva's longtime friend and mentor in Colombia in a search for a missing Marine Lieutenant and Navy Chaplain.
"The Good Son" is centered around Director Vance (Rocky Carroll) and provides a rare glimpse into his personal life - introducing us to a new family member.
The Secretary of the Navy partners Gibbs with Dr. Samantha Ryan after top secret information is leaked by someone on the inside.
The murder of a chief petty officer with top secret clearance leads the team to the murder of an international arms dealer in the DC area.
Mark Harmon and Jamie Lee Curtis reunite when she guest stars as Dr Samantha Ryan on this mid-February episode of NCIS.
DiNozzo is forced to work closely with his ex when the death of a Navy captain is tied to a secret society.
While getting 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.
How will Ziva respond when Ray returns ... with a ring box? We'll find out on the January 10 episode of NCIS!
Will E.J's reappearance force DiNozzo to confront his past? We'll find out on the winter 2012 premiere of NCIS.
A Navy Captain is murdered in his hotel room, prompting NCIS to find his pregnant companion and protect her from unknown assailants.
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.
As the NCIS team continues its search for a missing Marine, Gibbs and Ziva travel to her last known whereabouts in Afghanistan. Meanwhile, Tony reveals his deepest fears and Gibbs is forced to relive events from his past.
The NCIS team uncovers a discrepancy with DNA remains when investigating the crash of a military plane that had been transporting caskets.
The NCIS team searches for answers when the current husband of both Gibbs's and Fornell's ex-wife is suspiciously kidnapped.
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.
A coast guard officer is gunned down on a cargo vessel, meaning CGIS Agent Borin joins the NCIS team to search for the killer.
A Lt. Navy Commander is the target of an assassination plot, and the team must figure out why. Abby learns she is adopted after a failed attempt at kidney donation.
The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and a killing.
The NCIS team uncovers a startling surprise after a young Marine shows up to his homecoming party with a fatal stab wound.
After spending months tracking down his target, Tony is left with the blood of an NCIS agent on his hands in the ninth season premiere.
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