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While working on an assignment, Gibbs is seriously injured in an explosion and taken to a hospital, where he recalls his painful past which he has always kept hidden from others. The rest of the team must proceed with the investigation and put their feelings aside, and Tony is left in charge.moreless
After the terrorist's attack, the NCIS team is shocked and is trying to cope with Kate's sudden death, each in their own way. Now, their mission is to collect all the possible info on Ari and find a way to stop him before he does any more damage. Meanwhile, while feeling guilty over Kate's death, Gibbs is informed that the NCIS director is leaving, and the replacement is Jenny Shepard, a woman Gibbs worked with in the past and had a romantic history with.moreless
Still stressed over Kate's death, Gibbs is even more hurt when Ari kidnaps Ducky and decides to play with his mind. Gibbs sends Tony to follow Ziva, and after Jenny and Gibbs are almost shot to death, he is even more determined to finish once and for all with Ari, and Ziva's strange connection to Ari will be just the help that he needs.moreless
The cross-over that aired few weeks after the show's premiere, was aired as a JAG episode, but also a pilot titled "Navy NCIS: The Beginning". The episode is a 1-hour combination of two episodes that aired as JAG, "Ice Queen(1)" and "Meltdown (2)".
A murdered JAG officer teams up the JAG staff with agents of the Naval Criminal Investigative Services (NCIS).
Tony faces a boy from his past when missing classified Navy documents are found after a warehouse fire, prompting the NCIS team to join the Baltimore police department investigation.
The team takes upon an unusual case when a telemarketer reports a possible murder of a petty officer who appeared to be dying over the phone. With the help of the Virginia officials, the team finds out that the officer faked his own death and they need to locate him after learning more info about him.moreless
When one of their own is killed, the team must find the killer before they get to another member - Gibbs.
The NCIS team has to find out the cause of the helicopter crash that was found on shore and locate the missing pilot. Meawhile, Ziva issues a dare to Tony and McGee.
The NCIS team must work on an assignment against a terrorist group without Gibbs, who is still recovering from the explosion. Gibbs has to fight with memory loss, while he's visited by his former boss. Gibbs' help is needed, especially when the team discovers that he is the only person who has information about the terrorists' plans, so he needs to retrieve his memory before the terrorists attack.moreless
Against orders from Homeland Security, the NCIS team continues their manhunt for the elusive Bodnar.
The NCIS team finds a place where the mob has been dumping bodies for a long time, and one of the victims is an undercover FBI agent. The FBI suspect a mole and arrest Fornell. Gibbs sets out to find the real mole and clear Fornell.
The NCIS team investigates the murder of a Navy lieutenant commander while dealing with her distraught husband. Meanwhile, Ziva ponders the future when Ray returns.
After catching an international arms dealer, the NCIS team learns that Navy's highly classified weapons system will be sold to "La Grenouille," an important arms dealer. To stop the transaction, the team will send Ducky undercover. Meanwhile, another government agency appears to be working on the same case, with different plans.moreless
When a former NCIS agent is found dead, Director Shepard heads to L.A. for the funeral with Tony and Ziva in tow. But an old assignment that Jenny was on with the deceased, comes back to haunt her, in a big way.
A terrorist holds Ducky, Gerald and Kate hostage while the rest of the NCIS team tries to figure out how the terrorist got inside and how to get their people out safely.
Terrorism shakes the foundations of the Navy and NCIS to such an extent that Gibbs and the team face surprises that will devastate them.
While on medical leave, Ducky decides to reopen a 12-year-old case by ordering the exhumation of a Navy commander's body. Meanwhile, the team also investigates a recent death of a Marine that may be tied to Ducky's old case.
The NCIS team investigates the brutal murder of a Navy Lieutenant who just returned home from the Middle East.
A massive storm brings the NCIS team aboard the USS Borealis, where everyone becomes a suspect once the crime scene proves that Mother Nature wasn't the only culprit. Tension builds when McGee discovers that his estranged father, Navy Admiral John McGee, was on board during the incident.
Gibbs continues to work with a Marine Captain sufferingfrom PTSD in an investigation to track down a terrorist.
The NCIS team investigates the cause of a mysterious death involving a NCIS armory employee that was found four months after the Navy Yard bombings. Meanwhile, the team has to undergo mandatory psych evaluations, causing Gibbs to worry about Abby.
When a petty officer is murdered in a billionare's Ferrari, the NCIS team stumbles upon Gibbs' namesake.
The NCIS team investigates a fire on a U.S. Navy ship which leads them to a revelation that threatens the security of all U.S. Navy facilities worldwide. Meanwhile, Tony and Ziva travel to Italy to investigate an explosive device that was found on a Navy ship.
The NCIS team has to find a ruthless murderer after the dismembered fingertips and teeth of a murdered Marine are found in a pickpocketer's stolen purse.
The NCIS team is questioned by a Department of Defense investigator regarding their response to the Bodnar case.
While investigating the murder of a Navy Commander, the NCIS team finds out the whereabouts of Agent E.J. Barrett.
After Ducky and Jimmy fail to return to headquarters following a crime scene investigation, the rest of the NCIS team works to locate the disappearing duo.
Gibbs and the team are assigned legal counsel after the Department of Defense IG Investigator puts their future at the agency in jeopardy.
Gibbs goes on the hunt to find Harper Dearing and bring him down following the NCIS headquarters bombing.
The NCIS team investigates a teenage girl's abduction while Ziva and Abby team up to protect her friend who witnessed the kidnapping while Gibbs seeks information from a past connection.
A case hits close to home when the lead suspect in the murder of a petty officer is Director Vance's brother-in-law.
The team looks into a hacker that could lead them to the most-wanted cyber terrorist in the world.
The NCIS team has to find a young girl that was kidnapped, but their investigation turns into something else when her grandfather gets way too involved.
As Gibbs and the team search for a terrorist ring stateside, Tony travels to Israel with the mission of finding Ziva.
When a Navy captain is found dead and dressed in a weird costume under his uniform, the NCIS team comes upon a secret society consisting of real-life superheroes, and they have to track down the villain in the story with the help of Tony's ex-fiance.
The team heads to LA to work with the team there to investigate a murder, which soon turns into something bigger. Meanwhile, Tony begins snooping into Ziva's private life.
After Ziva tracks a lead on Bodnar to Berlin, she and Tony head overseas in the hopes of avenging her father's death.
When a Chief Petty Officer with top-secret clearance to a Naval research laboratory is murdered, the investigation leads the NCIS team to an international arms dealer. Meanwhile, a probationary agent tries to impress Gibbs hoping to join his team.
The NCIS team investigates the case involving a Navy petty officer and a dead journalist. Meanwhile, Ziva is shocked when her father pays her a visit.
An investigation hits close to home and gets personal as the NCIS team seeks answers and demands justice.
It's Christmas time for the DiNozzos when Tony's dad comes to visit. Meanwhile, the NCIS team is "following the money" in order to solve a murder investigation.
In Los Angeles, Gibbs and McGee continue working with the NCIS division in order to track a terrorist cell. Agent Callen goes undercover, while a psychologist uncovers the truth about the relationship between Gibbs and Agent Macy. Meanwhile, Tony fears that Ziva may not be loyal to NCIS.
The team's search for a terrorist targeting the Navy takes a bizarre turn when a high-tech bug is found in Probationary Agent Ned Dorneget's tooth.
When a Navy reservist returns home to find her husband missing and her living room covered in blood, she turns to the NCIS team to bring him home. Meanwhile, Tony suspects that Ziva is planning a risky move to avenge her father's death.
Gibbs' barber seeks his help in ruling out his son as a suspect in a high-profile case.
While investigating a crash of a military plane that was transporting caskets, the NCIS team comes upon a discrepancy with the DNA remains.
While investigating the murder of a coast guard officer aboard an abandoned cargo vessel, the NCIS team finds a Lebanese family seeking refuge in the US. Meanwhile, Tony and McGee attempt to find the perfect woman for Gibbs.
While grieving for the death of his wife and the mother of his children, Director Vance comes across personal information he didn't expect and it makes him doubt everything.
A marine skilled in K-9 bomb detection is killed on duty in Afghanistan and his wife begs the NCIS team to conduct their own investigation.
Gibbs is confused about Vance's order to cross-examine a teenage boy accused of killing his own father, a retired Marine.
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 investigates the death of a young Marine that came to his homecoming party with a stab wound.
While stopping by his usual diner for coffee, Gibbs finds himself in grave danger, prompting him to think about his past and the choices he made in his life.
The search into the disappearance of a Marine Lieutenant continues as the NCIS team tracks them down to Afghanistan. Meanwhile, Tony's deepest fear resurfaces and Gibbs has to go through memories of his past again.
After a Navy Captain is murdered in his hotel room, the NCIS team has to find his pregnant companion and protect her from unknown assailants. Meanwhile, Jimmy brings his future father-in-law to work.
Tony and Ziva travel to Colombia, where they are joined by Ziva's longtime mentor in the search for a missing Marine Lieutenant and Navy Chaplain.
When the husband of Gibbs' and Fornell's ex-wife is kidnapped, the NCIS team partners up with the FBI to investigate.
Following an explosion at a D.C. black-tie affair, Parsons assumes a new role within the NCIS agency, while Gibbs' team remains down three agents.
When a contract killer murders a Navy Lieutenant Commander, the NCIS has to find out the motive behind it, and Abby learns valuable information about the case after going through a series of kidney donation tests.
The team must investigate the apparent suicide of a Navy reservist with a high security clearance. Suicide is the apparent cause of his death, but is it the right one? Gibbs and Dr. Samantha Ryan of the PsyOps Division race to solve the mystery of the Navy reservist's death.
When Tony's father is found inside a car with a dead body in the trunk, the NCIS team has to find out if he is indeed guilty of murder, while the man himself has no memory of the night, and Tony is removed from the investigation but attempts to help prove that his father is innocent.moreless
Following a leak of classified information, the Secretary of the Navy partners NCIS with PsyOps to solve the mysterious case.
An open-and-shut hit-and-run is anything but for NCIS when the prime suspect's lawyer confides in Gibbs that her client's confidential alibi is solid.
The NCIS team utilizes Twitter to help solve a case, and McGee agonizes over his lost badge.
An investigation into a marine's car accident prompts emotional childhood memories for Abby.
Complications arise when the NCIS team discovers a link between a murder victim and the boyfriend of Gibbs' ex-wife.
DiNozzo is sent to France on a covert mission to bring home an admiral's daughter, but he turns to the NCIS team for help when he encounters a controversial crime scene.
NCIS and the CGIS head out to sea to investigate a suspicious explosion on board an oil rig.
The latest NCIS investigation returns DiNozzo to his Baltimore P.D. days when he chases a felony suspect from a 15-year-old case.
The murder of a woman impersonating a deceased soldier leads Gibbs to an Afghan women's shelter formerly championed by Mike Franks.
When it's discovered the Secretary of the Navy was bugged during a confidential briefing, the NCIS team must work with NSA Analyst Ellie Bishop to help determine who is responsible.
Gibbs and McGee are sent to Russia to escort Kevin back. When there helicopter is shot down, the team has to think fast to survive the guys after them.
When DiNozzo confronts a man impersonating a Navy officer, guns are drawn and the perpetrator is left dead. The subsequent investigation uncovers that the only eyewitness is DiNozzo's father, who is in town to disclose a secret to his son.
The NCIS team enters the world of rock ‘n roll after a bomb explodes during the rehearsal for a military charity concert.
When a stolen drone is linked to the elusive terrorist Parsa, the NCIS team partners with the Department of Defense, including Gibbs' former girlfriend, Hollis Mann, to track down the device before it is used for a large scale attack.
The NCIS team has a surprise in store for them when investigating the murder of a Navy lieutenant leads them to McGee's grandmother.
The NCIS team investigates the death of a Navy lieutenant that died of over-hydration, which soon turns into a murder investigation. Meanwhile, Gibbs meets Ducky's new lady.
Gibbs reunites with a former colleague when the murder of a congressman in New Orleans prompts a joint case between the field offices and the FBI.
A Marine photographer disappears after a controversial photo of an Army Lieutenant standing over a dead national in Farah Province of Afghanistan becomes evidence in his court martial. Gibbs' investigation narrows to another story the photographer was working on - this time inside the US.
After a mysterious illness strikes children from military families, Gibbs and the team investigate the cause. Meanwhile, Abby and Jimmy partner with the Naval Medical Research Center to determine the strain of illness, all in hopes of delivering a cure before the holidays. Also, Vance struggles with forgiveness as his estranged father-in-law makes a surprise visit to his home.moreless
In an effort to find the terrorist Parsa, Gibbs and the NCIS team track down one of his cohorts using evidence from the drone attack. Meanwhile, an emotionally shaken McGee struggles with the ramifications of the incident.
The murder of a port authority officer reveals Parsa's possible whereabouts, as the team continues their tireless hunt. Meanwhile, Bishop reveals her past association with the elusive terrorist.
Gibbs fights for his life after being shot by Luke. Meanwhile, Agent Dinozzo and Johanna travel to Egypt to take down The Calling.
A dead ensign in Chesapeake starts the team on a twisted plot involving murder and sexual assault.
After uncovering faulty bulletproof vests in a truck filled with stolen U.S.M.C. merchandise, the NCIS team attempts to locate both the source and any vests that had been shipped to military personnel overseas.
When an American woman is rescued from terrorist captivity, the team learn one of her captors was American. Gibbs and Fornell try to cope with their ex-wife's murder.
The team investigates a murder, where the victim is using an alias from Gibbs past. Bishop get's anxious over the thought of having to work under cover in the future, and the team learns the secret of Gibbs working as a computer nerd.
The chase for the fugitive continues. Gibbs team up with Fornell´s partner. As they try to locate the remaining targets on the hit list, the case takes an unexpecting turn.
When a texting teenager rear-ends a criminal's car, the accident initiates a series of events suggesting bioterrorism; as the NCIS team races to prevent it, Abbie ends up one of many hostages at a pharmaceutical company with a dangerous secret.
An innocent man is jailed for 16 years due to a problem with a test that Abby had absolute faith in. Helping to solve the riddle is a band of amateur sleuths from a secret society in which Ducky is a part.
The NCIS team investigate when the murder of a petty officer is revealed to match a M.O. that a local serial killer is using and it falls to the team to discover if this is the serial killer's latest victim or if it's a copycat killing while McGee and Delilah must learn to compromise before moving in together while potential tragedy lies in store for Bishopmoreless
As the NCIS team is recruited by a DEA agent from California to help capture an evasive, criminal Marine, viewers learn more about Gibbs' past, changes which his team observes as he continues to recover from a near-death wounding, and his dedication to this particular case.
A marine captain is murdered, and the team suspects a known terrorist's brother. Dinozzo is jealous of McGee's being selected by PR.
After a Marine is found murdered in Quantico hours after calling Gibbs to discuss a possible case, Bishop and McGee go undercover as a married couple to run surveillance on a Marine Lieutenant and his wife.