Fornell and his Hoovers arrive in the squad bay; he tells that the Gibbs team is under investigation for the murder of the Frog. However, the Gibbs gang investigates the FBI, and they put the pieces together and explain them to the suits.

A Marine captain dies in a mortar explosion in Baghdad; the SecNav sends the body to Ducky, who finds that a bullet, not shrapnel, caused the death. Tony and Jardine investigate on site; they and the rest of the team together figure it out.

A man dies at a retrofitting site at a Navy facility; Gibbs and company investigate. Palmer sees a fleeing person, who takes a shot at him; a second body turns up.

In Los Angeles, Jenny, with Tony and Ziva as a protective detail, attends the funeral for a retired long-time special agent, who supposedly died of a heart attack; Jenny hears a name, sees a man, makes pictures, and summons Mike Franks from Mexico; she tells him that she's the next person to die. Jen and Franks visit the home of the dead man; there they meet his girlfriend, whom they send to Nevada, but who winds up dead in Santa Monica. Jen and Franks check out an insurance policy at a diner in a desert, and she refuses help from Tony and Ziva; Franks steps outside in the back, then four men enter the diner, and gunshots ring out; Tony and Ziva find a mess inside. [To be continued.]

In the aftermath of Jenny's death, Assistant Director Vance searches for Franks, who escaped the diner after killing the fourth gunman. Meanwhile, Tony and Ziva try to locate the one responsible, while dealing with the fallout of failing in their assignment to protect the Director. The trail points to a former hitman called Natasha, who Jenny failed to assassinate in Paris nine years previously while on an assignment that she and Gibbs were working on together. Since Gibbs killed Natasha's lover, Natasha has returned to the U.S. seeking revenge. Natasha, who never saw it coming, is killed by Franks, after Gibbs set a trap for her at Jenny's house. Gibbs burns down the house to cover up Jenny's death, making the public believe she died of smoke inhalation. In the fallout of Jenny's funeral, newly appointed Director Vance shreds a page from his personnel file in the Director's office and terminates Ziva's liaison status (sending her back to Israel), reassigns McGee to the cyber crime division, and sends Tony to the USS Ronald Reagan. Vance then gives Gibbs personnel files for his new team members.

In Washington DC, a petty officer's body is found four and a half months after he had died; another officer dies in Morocco and Ziva sustains an injury. Gibbs and company find a link and reach a solution. Ziva gladly returns to the NCIS.

A lieutenant appears to jump from an aircraft carrier at sea; Tony investigates aboard the ship and in Cartagena, Colombia, where the missing man supposedly joined the ship. Gibbs and Ziva join Tony; they find the answers and the bad guy.

Two cyclists find the body of a woman lieutenant commander assigned to the Navy Office of Legislative Affairs; Gibbs and company investigate. A senator, an old buddy of Gibbs, calls him. Another body turns up. The gang solve and arrest.

An ambush in an alley behind a bar leaves one Marine dead and one very ill; the gang investigate. The survivor is from Gibbs's hometown, and the team goes there; flashbacks abound. The bunch put the pieces together and nail the bad guys.

A neighbor finds the body of a tortured Marine; Gibbs and company investigate, and they encounter Fornell, who says that a person of interest is also a key witness in a major murder case. Another Marine dies, and the gang connect the dots.

Bloody water emits from a shower head in base housing at Quantico; Gibbs and company investigate; something has disappeared; a second man dies. The killer leaves clues, which suggest more deaths. They solve the game and nab the bad guy.

Gunmen rob the credit union at Quantico and kill a guard; Gibbs and company investigate; they question whether getting cash was the objective of the robbers. The team make several connections, then they round up the bad guys at a burial.

After an elaborate setup Tony and Ziva break into a classified Navy facility; however, that test is itself a ruse by which to identify a mole within the NCIS. Gibbs and Lee meet in the chat room, and Gibbs says that now they work together.

Tony and McGee unsuccessfully try to follow Lee's pickup man; a satellite leads the gang to a house with a secret room and a dead body; a second stakeout produces a different result, which takes the team to a solution, a catch, and more.

A boatswain's mate dies after a single-car crash; Gibbs and company find evidence of gunfire plus beatings of the victim, who was a member of a fight club and, they learn, the operator of an illicit business. The gang figure out all of it.

A Metro detective investigates a burglary and double homicide at Christmas in Washington; the suspect is a former Navy petty officer who supposedly died 17 years ago; the Gibbs gang take an interest, find the pieces, and put them together.

An old skeleton comes to light; Gibbs sends McGee to question a prisoner convicted of murder in two identical cases; while he does so, other inmates kill a guard, seize McGee, and take over. McGee successfully negotiates and investigates.

On a sidewalk a former fiancée fatally stabs a petty officer; while Gibbs and company investigate, a different woman accuses Ducky of a war crime and stabs him through one hand. Ducky surrenders, but Gibbs sorts it out and gets Ducky free.

Two kids find the disemboweled body of a missing Navy captain; Gibbs and company investigate; Ducky finds a pentagram impressed into the victim's back. Another man dies. The team put the pieces together, and Gibbs and Tony nab the bad guy.

The Metro PD finds the body of an 18-year-old Marine who had grown up in the same hood where he died; the Gibbs team investigate with the help of Franks. They slowly assemble the picture, then a gentle social worker offers the last piece.

A man, impersonating Tony, dumps the body of a witness against him in a trial during which the impostor became convicted and imprisoned as a result of one of Tony's investigations; Tony and the gang sort out some of it but not all of it.

An agent of the NCIS dies in an execution-style shooting; Gibbs and company investigate. A radioactive painting provides clues, and an impostor federal agent causes trouble, but Gibbs and Tony, on horseback, and the others break the case.

Vance, using members of the Gibbs team, in Chicago works the case of the murder of a man who, Vance insists, was once a member of the Marine Corps. Gibbs wonders whether Vance has exceeded his authority. Later Vance hears what happened.

In Navy base housing in Norfolk, Virginia, a mother finds a pistol among the personal stuff of her 12-year-old son; Gibbs and company find a trail of old crimes and two recent deaths. The gang put the pieces together and find the shooters.

Kort asks Gibbs and the team for help in hunting one of NCIS Most Wanted, but it's more complicated when his accountant enters the picture.

Local cops find the body of an enlisted Marine on UA; Gibbs and company investigate. The FBI haul Abby to a classified lab to replace a missing man, who was a target of the dead Marine. The gang figure it out and tie up the loose ends.

Gibbs and company start looking into the murder of a Marine. Gibbs and McGee go to Los Angeles for a joint gig with the NCIS Office of Special Projects in LA due to a suspected link. The investigation continues on both coasts. [Continued.]

Gibbs and McGee continue with the OSP in LA. Rifkin shows up and interferes with the NCIS investigation. Two sleepers in a terrorist cell die, but OSP agents swarm a shop and grab others. Gibbs intercepts Rifkin and tells him to go home.

During a poker game at the home of the SecNav, an ICE agent dies while on the protection detail; Gibbs and company investigate with support from the FBI and ICE. An invisible man becomes visible and dead. Tony arrests Michael, who resists.

Ziva finds Tony and Michael on a floor; Michael dies soon afterward; the next morning her pad explodes. McGee and Abby find answers. Vance, Gibbs, Tony, and Ziva go to Tel Aviv; Ziva remains, and the others return; Ziva runs into trouble.

Having not heard anything from Ziva, Gibbs, Tony, McGee, and Abby wonder; each starts sniffing and digging; they trace her to Somalia. Gibbs, Tony, and McGee go there; Tony and McGee become caught; Gibbs springs them all; they all go home.

Three men die during what they called a bachelor party; one was a Marine staff sergeant; Gibbs and company investigate. The clues lead to a cop, who later dies. The gang find the pieces and put them together; Ziva rejoins the team.

A critic of the NCIS has severely complained about an alleged cover-up of the death of a Naval officer; the griper falls to his death; both the NCIS and the Metro PD investigate; the Gibbs team figure it out. Ziva seeks Gibbs's signature.

The body of a UA Marine, last aboard a ship with Ziva, turns up in a shrimping net in the Indian Ocean. Vance flags Ziva's application while he questions her. Mossad and more bodies appear. Ziva and Abby tell all. Gibbs puts Ziva to work.

A Marine, a practical joker, dies, apparently by suicide by carbon monoxide; Gibbs and company investigate; Ducky rules out suicide, and Abby confirms. Tony starts to arrest the widow, but Gibbs stops him. The gang put the pieces together.

Gibbs's boat, which he gave to Franks, drifts, with two bodies aboard, into the Naval Station at San Diego. Vance and the team investigate. Franks and two relatives show up at Gibbs's house. The gang solve the case and make an arrest.

Two runners at the US Naval Academy find an unattended car and the body of a civilian physician; Gibbs and company investigate; Vance recognizes the MO of a North Korean woman assassin. The gang find the pieces, and everything works out.

A woman Naval officer dies during a break-in at an ISP facility in or near Washington, DC, then electric power goes down throughout the entire metro area; Gibbs and company investigate in the dark; they solve the case and grab the bad guy.

A dead Marine's day job at a government think tank leads Gibbs and the team into the life of a 12-year-old prodigy who may be the killer's next target.

Jackson visits Leroy for a special reason. Meanwhile, a couple, out in a park in freezing weather, finds the body of a Marine first lieutenant, barefoot and thinly clothed. Gibbs and company figure it out and elicit a confession.

Two park rangers find the burned body of a Navy test pilot on leave in a forest in the Appalachian Mountains; Gibbs and company investigate; McGee sees evidence that the pilot tried to fly a jetpack. The gang figure out what truly happened.

A Saudi Arabian limo driver dies in an explosion of a car aboard NAS Patuxent River; Gibbs and company investigate; the apparent target is a Saudi prince present there for advanced training. The gang figure it out. Tony's father visits.

Tony and Ziva escort a whistle-blower from Paris to Washington, DC; during the flight they meet a federal air marshal, and they all encounter various problems. Gibbs, McGee, Ducky, and Abby help in Washington, and everything works out.

A Marine lance corporal's car explodes; while Gibbs and company investigate, McGee finds radioactivity. Ducky says that the dead driver is not the owner. The people around DC panic about dirty bombs. The gang figure it out and wind it up.

The death of a Marine veteran gets the attention of Gibbs, Fornell, and the gang. Damon reappears, then he and Ziva pose as truckers. McGee and others figure out everything, then Gibbs, Fornell, Damon, and Ziva round up the bad guys.

A Navy captain dies of gunfire while with his fiancée, who is Gibbs's first mother-in-law. While Gibbs and company investigate, they find several discrepancies and inconsistencies. Gibbs figures it out, and he and "MAllison" work it out.

A shooting takes place in Rock Creek Park in Washington; the victim is a Marine officer who became MiA six years before; Gibbs and company investigate. A second life, name, and wife all come to light. The gang solve it and nab the shooter.

While investigating the deaths of a diver and a captain, Gibbs and company meet two special agents of the Coast Guard Investigative Service, who present similarities to the gang. They all cooperate, find the truth, and nab the bad guys.

In Norfolk a Navy lieutenant and base-newspaper reporter dies of stab wounds to the back, as have three other men, and as does one more; Gibbs and company investigate, with the help of a former madam in Washington; Gibbs finds the killer.

The body of a Navy petty officer, shot and drowned, washes up on a beach; while Gibbs and company investigate, another body, wrapped in chain, turns up. The FBI becomes involved, the gang find clues, and Fornell and Gibbs find a leak.

A Navy lieutenant, otherwise in perfect health, dies under mysterious circumstances; Gibbs and company investigate; the vic's sister disappears; a long-time friend of the siblings recently died. The gang figure it out and bust the killer.

The body of a Marine corporal, minus his feet, shows up in the trunk of a junked car; Gibbs and company investigate. Abby and McGee go to Mexico on business; Abby returns with concerns. The gang figure out who killed the Marine and others.

The body of an NCIS agent turns up in a bonfire on a beach near the US Naval Academy after celebrations just before graduation; Gibbs and company learn also about a rape of a sailor, and Gibbs goes to see Franks in Mexico. [Continued.]

Gibbs meets Paloma, the head of the Reynosa drug cartel in Mexico; he gets a ride to Washington, where he talks with Vance in code. Tony and Ziva arrest a bad guy, who then dies. Ziva attends a ceremony. Paloma meets Jackson. [Continued.]

Gibbs must take desperate measures to protect his loved ones with Paloma Reynosa still on the loose.

At the high school at Quantico, students and teachers fall asleep while in class; Gibbs and company investigate; one girl disappears. A grandfather both helps and interferes. Temp interns join. The gang solve the case and find the girl.

A woman Marine sergeant, who's a bomb-disposal tech, shoots to death an intruder in her pad; Gibbs and company investigate; Fornell and another FBI member become involved. The gang find everyone and figure out everything; it all works out.

The body of a petty officer shows up in a hot tub; Gibbs and company investigate; Ducky sees an unusual clue; Abby finds a link to the Royal Navy. A Royal Marine major and a CIA agent prove to be something else. The gang catch the bad guy.

A shooter kills three people, including a Navy commander, on live talk radio; Gibbs and company investigate; they believe that the host was the main target. The gang pursue clues to a bomb at a baseball diamond, where they nab the bad guy.

A Naval Reserve lieutenant, who's a chemical engineer, dies when a city bus accidentally hits her on a street in Washington, DC; Gibbs and company investigate. Abby deciphers mysterious writings; the gang figures it out and nab the perp.

An admiral finds the body of a long-time friend; Gibbs and company investigate. Tony and Ziva pick up Tony's father, who appears to have become connected with the victim. Sr. does a favor, and Ziva accompanies him. The gang figure it out.

Vance hosts a conference of high-level members of the NCIS; he invites Eli, who accepts. Eli's presence raises security concerns; Gibbs and company take part in the protective arrangements. Threats arise, and the gang respond. [Continued.]

An attack has killed one and left Vance with serious injuries; Gibbs takes charge by Vance's order. Eli reveals details about an operation 22 years old. Gibbs and the gang put the pieces together. The bad guy emerges, and justice prevails.

A Navy petty officer, who's the only witness in a civilian capital-murder trial, disappears; Gibbs and company investigate in response to a request by a commonwealth attorney. The gang puts all the pieces together, and justice prevails.

A Marine first lieutenant dies of gunfire during a dinner cruise; Abigail Borin, of the CGIS, also is a guest during the same event; she, Gibbs, and the gang investigate together. They find and fit the pieces, and they nab the bad people.

A Navy recruiter dies after becoming shoved down a staircase at a high school in Fairfax, Virginia; Gibbs and company investigate. Dr. Magnus, Ducky's predecessor, visits. Gibbs and the gang eventually figure it out and finger the bad guy.

Two teenagers find the battered body of a Marine Corps Reserve sergeant in his own backyard; Gibbs and company investigate. The team find evidence of sad stories. Gibbs pursues a bruise and figures it out, then the gang bust the bad guy.

Someone shoots and kills the executive officer (XO) of a Naval vessel, a commander, in his own stateroom; Gibbs and company investigate. However, a shrink (a persistent and presumptuous one) arrives to conduct mandatory psychologic evaluations for all members of the gang, and she accompanies them aboard the ship. Ziva recognizes the spent brass as Russian. Word of the murder spreads fast, for seven international journalists are aboard as guests; one reporter makes a confession and reveals a potential powder keg. The team continue, and they eventually find the solution. Meanwhile, the shrink also continues, eliciting a number of flashbacks, mostly related to Kate Todd, a former member and special agent. Eventually Tony and Gibbs realize who the shrink is, then she submits her report to the director.

A US Marine dies in an explosion at a US embassy; he saves a foreign official and others; the NCIS provides security to the official's daughter in Washington, DC; kidnappers abduct her, and another man dies. The Gibbs gang figure it out.

A Metro cop in Washington, DC, finds a set of severed fingertips which prove to be those of a Marine corporal; Gibbs and company investigate; McGee finds the corresponding body in the local morgue; Ducky concludes that the corporal was a victim of stretching to death on a rack. McGee and Ziva meet Max, who used a credit card of the dead Marine; excitement occurs while McGee interviews her; Tony and Ziva meet and interview another interesting chick; McGee pursues with Max. Gibbs asks whether the corporal died because Max, a former girlfriend, made a record score on a video game. Ziva gets a lead on a major game programmer, but he has disappeared; Gibbs meets an arms dealer. Tony and McGee find the body of the missing programmer, with mutilations identical to those on the Marine. Gibbs and McGee get a confession, then the gang search for a particular computer; McGee guides Gibbs, who finds it and announces "game over". Tony makes a date for McGoo.

Two teenagers find the body of a former NCIS employee; Gibbs and company investigate; in the trunk of the victim's car Gibbs and McGee find stolen property from a current case. The gang find the details and the people responsible.

A "meter maid" sees a body inside a home in Washington, DC; the victim, a retired Marine colonel, received seven blows of an ax; Gibbs and company question a prime suspect, who denies involvement and helps Gibbs to arrest the real killer.

In a national forest near Washington, DC, a young couple find the body of a Navy lieutenant commander in his dress-blue uniform; Gibbs and company investigate; on a rock nearby Tony finds a single word written in the victim's blood. The Metro PD finds the victim's abandoned car in Washington. Ducky finds that the shooter used ammunition of an unusual type, Gibbs and McGee talk with a specialty publisher, and Tony and Ziva find the body of an FBI agent, so Fornell enters the picture. The publisher leaves the country, then Gibbs and Fornell speak with the author of a mysterious book, who tells them about the contents. Tony, McGee, and Ziva arrive at a self-store room in time to see two stars and a couple of helpers get blown up; the admiral recovers well enough to go home, and he gives Gibbs and Fornell a lead; they pursue it, but Abby says to hold the phone, then she directs them to the real killer, and they nail him.

Gibbs and company investigate the murder of a member of the US Navy; EJ has investigated three previous similar deaths, so Vance gives her the lead. A suspect turns out to be another victim. Ziva's boyfriend is something else. [Continued.]

EJ and her team take over the P2P case; Gibbs and company investigate the death of a Navy woman officer. The solution, first believed to be simple, proves to be complicated. The killer jumps Ziva, and the gang pounce on him. [Continued.]

Gibbs and company investigate a body wearing a dress-blue uniform of a three-star admiral; Tony recognizes the victim; they first suspect another P2P killing; however, Ducky suggests otherwise. The gang find both the killer and the motive.

EJ and her team investigate yet another P2P murder; the victim is an NCIS agent from Norfolk; Gibbs and company pitch in, as does Franks. Kort, a CIA agent, spills in a briefing. Both Franks and EJ encounter the prime suspect.

Gibbs and Tony follow EJ and her team to a nearly vacant building; they find that the P2P murderer has killed Levin, seriously injured Cade, and kidnapped EJ; Gibbs pursues the suspect and EJ; he finds her, left to suffocate. McGeek traces a phone number to CI-Ray (Ziva's boyfriend). Ducky, with help from Gibbs, explains the changes in the MO of the killer. From Levin's left forearm EJ secretly removes a small object. Ziva tries to intercept Ray, but Cobb, the suspect, intercepts and kidnaps her; later, while Gibbs, Tony, McGee, and EJ are present inside a hotel room, Cobb arrives, enters, and surrenders, but he refuses to tell where he put Ziva. However, Abby provides clues to a place, where the gang plus Ray find and rescue Ziva, who gives explanations. Back at the HQ, Cobb escapes with two hostages; Gibbs and others follow; a confrontation ends the career of the P2P killer. The SecNav resigns, and his successor gives Tony a highly sensitive and classified task.

Tony, during his task for the SecNav, took fire and sustained a concussion, and he acquired the bloody badge of some other NCIS agent; however, he has no memory of his activities. Gibbs and a shrink help Tony to begin to regain his memory.

A Marine private first-class returns from Afghanistan to his hometown in time for a welcoming party for him during homecoming week; however, when he arrives, he staggers in, mortally wounded, then collapses and dies; Gibbs and company investigate; Ducky says that death resulted from stab wounds. Ziva spots a piece of evidence, but it becomes hard to obtain it; Tony and Ziva find that the victim had started with a disadvantaged childhood, became adopted into a military family, then enlisted in the Marine Corps and established an impeccable record. Abby finds some interesting electronic evidence, then Tony and McGee find something while hiking, and McGee makes some new friends. Abby makes important discoveries; the gang learn about multiple identities, a forged letter, stolen funds, and a hidden relationship, and they rescue from death a man who then dies. Eventually they put the pieces together, and they get help for someone who needs help.

A Naval Reserve lieutenant dies of a gunshot in Washington, DC; Gibbs and company investigate; the victim has one of McGee's cards; McGee learns that his paternal grandmother is involved. The gang assemble the pieces and catch the bad guy.

In Washington, DC, near the Capitol a van accidentally hits and critically injures a pedestrian, who proves to be The Cooler, a wanted contract assassin, whose next target appears to be a Navy lieutenant commander; Gibbs and company investigate the target, LCdr. Geoffrey Brett, and his circumstances, including the threat. The Cooler briefly regains consciousness in a hospital, then dies before an NCIS agent reaches him. Ziva acts as Brett's protective escort, but he ditches her. Tony and McGee meet a CPA, then she dies. The three musketeers gather pieces of evidence and, with Gibbs, put them together; Brett says that he needs a lawyer. Meanwhile Abby volunteers to become an organ donor, learns more about herself, visits a pet-rescue center, meets someone whom she admires, examines her own feelings, and has a serious chat with Gibbs.

A boarding party from a Coast Guard cutter visits a foreign-flag cargo ship; no crewmember is visible, but a gunman kills a petty officer. The NCIS and the CGCIS investigate. Gibbs, Borin, and the gang sort it out and serve justice.

At 04:19 in northern Virginia an 18-wheel truck accidentally and fatally hits a Naval Reserve lieutenant who had swerved and woven on a freeway, parked on the left side, and walked toward an emergency call box on the right side; Gibbs and company investigate. Ducky sees telling evidence at the site, finds an explanation in his workshop, and offers a theory. The gang check out the obvious leads; Ducky meets and courts an attractive and interesting new ladyfriend. While hiking through a state park, the team find a dead SUV and a dead body under circumstances similar to those of the other victim; this vic is a civilian, but his estranged wife is a Marine on active duty in Afghanistan. When Duckman again sees his new honey, he gets two real surprises. Meanwhile, Gibbs and the gang figure out what's happened, so they head out to help; they wrap up some loose ends; Gibbs offers Duck a ride home.

Diane, the mutual ex-wife of Gibbs and Fornell, gets help from them; Victor, her current husband, has disappeared; they and the gang find the pieces, put them together, find the bad guys, and deal with them. Diane gives Gibbs a watch.

An aircraft crashes short of Dover AFB, Delaware, while carrying the remains of six Marines from Afghanistan; Abby does not find the DNA of one of the six; Gibbs and others consider the possibility that the one is still alive. [Continued.]

Gibbs and Ziva fly to Afghanistan to seek 1Lt. Flores or her body; Abby learns where she might be; an extraction team finds and saves her. Back in the USA Gibbs and the gang anticipate what's next, find a bad guy, and prevent an explosion.

DiNozzo Senior is found unconscious, in a car with a murdered naval officer in the trunk.

A Navy captain dies by gunfire; Gibbs and company investigate; the gang meet Emma, a pregnant Marine first lieutenant, who says that she's the real target. The team figure out the pieces, and they deal with the problems and the bad guys.

Two boys find the body of a Navy commander in a quiet suburban neighborhood; Gibbs and company investigate. EJ Barrett reappears from her hiatus but remains a target. Another man dies, and the gang protect EJ and find and catch the killer.

A Navy woman lieutenant commander dies of gunfire; she has served as a Naval attaché overseas, and her husband is a detective for the Metro PD; Gibbs and company investigate; the widower's help does not help, but the gang solve the puzzle.

At a diner an unknown person with a drawn pistol approaches Gibbs, who deals with him; then Gibbs experiences flashbacks and fantasies, which Franks explains. The next day McGee announces a decision, then the gang gear up and head out.

A civilian and a Navy captain die of gunfire in Washington, DC; Gibbs and company investigate; the Duck sees unusual undergarments, which are also costumes. The gang solve the puzzle and nab the bad guys; Wendy reveals something to Tony.

When two burglars enter a home in Arlington, Virginia, in the burbs of Washington, DC, they find the hanged body of a man; the victim proves to be that of a psychologist (with a PhD degree), who was also a Naval Reservist on active duty, and who held a high-level security clearance for his work, which included consulting with the US Department of Defense (DoD) on a psy-ops program; while Gibbs and company investigate, they soon encounter Dr. Rachel Cranston, who was a colleague of the victim, and with whom they've dealt before. Another mind-gamer shows up, and Abby finds a mind game. McGee plays with some electronic toys, and the other members of the gang pursuit other leads; Gibbs orders the team to concentrate on paper, and he kills a bug. Despite much interference and misinformation, the gang solve the puzzle and bust the people responsible. A payroll clerk discovers a number of mistakes, and Gibbs receives an interesting phone call at 04:00.

When Gibbs meets with a Navy chief petty officer and his attorney (to make a deal), the CPO collapses and dies; while the gang investigate, they find a connection to an illicit arms dealer. The team figure it out, and everything works out.

While Gibbs and Tony man a protective detail for the SecNav, a gunman shoots the secretary; the NCIS investigates quietly with the help of Dr. Ryan. Blackmail is involved; the gang and Ryan figure it out and find a hacker and the bad guy.

While on liberty in Baltimore, Maryland, a boatswain's mate second-class dies of a stab wound; Gibbs and company investigate; the prime suspect is a brother-in-law of Vance. The team persist, Abby solves the case, and they nab the bad guy.

A picnicking couple encounter a dead body, which proves to be that of a first lieutenant in the US Marine Corps; after Gibbs chats with Dr. Ryan, he and the team investigate; the gang see that the victim had plummeted from somewhere in the sky after he had first been beaten, stabbed, and shot; in one of his pockets they find a challenge coin, which they trace to a woman commander in the Navy Chaplain Corps, who is on duty with a relief team in Colombia. Ducky finds curious clues, and Abby interprets them (connecting to Colombia); Ziva communicates with Monique, a contact in Colombia, who repeats a rumor about the disappearance of the Marine and the chaplain; Ryan gives Gibbs a tip. Tony, Ziva, and a second woman chaplain join Monique in Colombia; someone else provides fireworks; then Gibbs interviews a mule. McGee continues to dig, then Ziva and Monique meet a couple and get answers. Tony, Ziva, and two chaplains fly back home with their new friends.

A fire in a warehouse in Baltimore brings in the NCIS; they find connections to Watcher Fleet. The gang work with a city arson investigator with a mysterious connection to Tony.

Gibbs and company continue to investigate an explosion and a fire; Tony, McGee, and Ziva work aboard aircraft carriers; Ducky and Abby provide much support. Tony and Ziva nab a bad guy, who tells who hired him and why. [Continued.]

Dorneget gets a surprise from a dentist; Gibbs and company continue to investigate Dearing and the thermite incidents. Dearing visits the Navy Yard and messes with Gibbs. Moves and countermoves abound; Vance disappears. [Continued.]

Gibbs and the gang continue to pursue Dearing, the explosions, and the disappearance of the director; Dearing continues to mess with Gibbs and Ryan. After another explosion and another death, disaster strikes at the Navy Yard. [Continued.]

After the attack on NCIS, the President orders all agencies to pursue Harper Dearing with "extreme prejudice". Meanwhile, Ducky tries to recover from his heart attack.

Abby has more nightmares; Navy Seabees continue to work on the building; a shrink does mandatory psychologic evaluations on all hands; the body of an armory worker appears four months after the explosion; Abby and the rest work out it all.

Ducky, on medical leave, unofficially calls for the exhumation of the body of a commander whose autopsy he conducted 12 years ago; he now suspects murder; the gang investigate another death, and they find the connection and the solution.

An inflatable raft washes ashore with three survivors from a missing Navy helo; the pilot also is missing; Gibbs and company plus Borin (of the CGCIS) investigate. The team and the other Abby find the pilot, the truth, and the chopper.

While the Gibbs team investigate a murder of a Navy petty officer first-class, Gibbs himself sees a Medal of Honor, which his father's former best friend received for valor during WW2. The gang figure out and work out both problems.

Two Marine officers return from Afghanistan after an ambush; one night one of them dies in a fistfight in an alley in Washington, DC; Gibbs and company investigate. The gang see a familiar face but do not yet find the person. [Continued.]

Gibbs tells Joe that Joe was right about Kersey's presence with the enemy in Afghanistan, and that he and the gang need his help to find the bad guy; Gibbs talks with Joe, his brother (Evan), and their father. Evan stays to help Joe, but their father goes back home in Ohio; Joe goes with Gibbs to see Paul, another member of the outfit, who responds negatively to Joe. Abby uses virtual-reality (VR) gear to help Joe recover some of his memories; the gang increase their efforts to find Kersey; Gibbs continues to work with Joe; they catch a clue; the gang find Kersey's car but not Kersey, then they find a girl with blue hair, then Kersey; then Joe suddenly recalls another face. Abby tells the site of the next incident, and McGee tells its significance; Gibbs and the team saddle up and head out; they find and seize first a package and then a ponytail. Joe reconciles with Paul; Tony gives Ziva an audio treat; Abby serves Thanksgiving dinner to the gang at Gibbs's pad.

A kidnapper shoots to death a Navy captain who intervenes; the bad guys get one teenage girl but not the other; both girls are Navy juniors; Gibbs and company investigate, pursue, solve, capture, and recover. Tony joins Ziva and her date.

A Navy seaman fires on Fornell, who returns fire and kills him; Gibbs and company investigate, along with Fornell and the mutual ex-wife of Gibbs and Fornell. The gang find frozen fish, a dead body, a missing accountant, and two bad guys.

A Navy Lieutenant Commander returns from an overseas tour to her home and finds the decomposing body of her husband. When Gibbs and his team investigate, they find a new kind of uncirculated $100 bills.

A human ear in the Potomac River leads to the rest of the body, wearing a uniform of a Navy petty officer; Gibbs and company investigate. Ziva's father shows up, as does his Iranian counterpart. Gunfire interrupts a dinner. [Continued.]

Gibbs and company continue to investigate the killings at Vance's home, seeking whoever hired the shooter; the gang identify the hit man and later figure out who's responsible. Ziva buries her father, and Vance and the team bury Jackie.

Two passersby find the bodies of a Marine and a young woman in a wrecked car; Gibbs and company investigate; Ducky raises questions. Flashbacks trouble Abby. The gang find anger, hostility, a feud, a history, a solution, and the bad guy.

Gibbs and company capture the world's number-2 cyberterrorist; as Ducky suggests, the gang use an unconventional technique to gain evidence from the stubborn bad guy; Tony and Ziva find the body of an Ebola victim; the team come out ahead.

A lance corporal collapses and dies on an obstacle course at the MCB, Quantico, Virginia; Gibbs and company investigate; Ducky sees many wounds. Another injured Marine dies. The team figure it out. Vance finds and solves personal business.

An injured Navy lieutenant commits suicide; Gibbs and company investigate; three people kidnap Ducky, Palmer, and the body, and the abductors demand an improvised autopsy. The gang find the missing body, teammates, answers, and bad actors.

Gibbs's barber confides in him about the former's son; Gibbs quietly asks around. Meanwhile the gang investigate the disappearance of $120K of Navy money; they suspect a Marine and his girlfriend. Gibbs and company work out both cases.

In Afghanistan a Marine sergeant, a dog handler, dies of a single round, said to have come from a Taliban sniper; his widow tells Gibbs about her doubt and the reason; Gibbs and company investigate and solve, then Gibbs arrests the shooter.

Aboard a destroyer of the US Navy during a storm at sea, the ship's medical officer dies, apparently by homicide; Gibbs and company investigate; McGee's father, an admiral, is aboard. The gang follow the tracks and catch the killer.

A Navy lieutenant returns home from TAD; her husband is missing, and the family room is a mess; Gibbs and company investigate; a suspect dies. The team assemble the pieces, and they bust two bad actors. Gibbs sends Ziva and Tony to Rome.

Orli, the new director of the Mossad, asks for NCIS assistance in hunting down a group of rogue operatives. Tony and Ziva travel to Berlin in their search for Ilan Bodnar.

Tony and Ziva, with only minor injuries, return to work; the others find the getaway car and the body of the wheelman, which provides a clue; Ilan contacts Ziva; Tony interprets the lead, then Ziva pursues it and draws the case to an end.

A Navy petty officer chases and attacks a man; he asks to speak with someone at NCIS; the gang solve. An official from the DoD starts snooping around, apparently on a witch hunt; he and a goon squad of grim feds confront Gibbs. [Continued.]

A familiar face defends Gibbs in Parson's investigation. While the team tries to help Gibbs, they must solve the murder of a Navy SEAL.

Parsons gripes about his project; then a bomb explodes, killing the SecNav; Gibbs volunteers for a spec op, which takes him to Iran, where he runs into Parsons, and where they investigate. Tony tries to pursue Ziva in Israel. [Continued.]

Tony searches for Ziva in Israel and elsewhere; he finally finds her, but he returns without her. Gibbs, Fornell, and others work hard on the case of the bomber. McGee makes a huge discovery, which allows Gibbs to solve and to take a shot.

A bomb explodes in a Navy Lieutenant's apartment, killing his unfortunate building manager. The team must find the missing Lieutenant and identify the bomber minus McGee, who has lost his credentials.

Gibbs and company investigate the death of a woman with an ID card of a sergeant in the US Marine Corps; McGee finds that the real sergeant died in Afghanistan three years ago. Gibbs and McGee go to Kabul, sort things out, and do some good.

A Navy petty officer dies of a gunshot in a park in Baltimore, Maryland; Gibbs and company investigate; at the scene Tony sees a clue and a man. Abby finds links, then the gang put the pieces together and nail the shooter. Tony nods off.

An explosion and a fire damage an offshore drilling platform near the Virginia Capes, killing one (a major in the US Marine Corps Reserve) and injuring many others; Gibbs and company, along with Abby of the CGIS, investigate. The CEO and the chief legal counsel of the oil company assure the SecNav and Gibbs of their utmost cooperation. Tony and McGeek trace one lead, which appears to reach a dead end, but which leaves egg on McGoo's face; Gibbs and the other Abby suspect that the target was not the platform but rather the dead victim. Tony and McGee plus Gibbs and Borin revisit the dead end, where they make a major discovery; Abby puts things together in her shop; Borin questions the corporate lawyer in Gibbs's chat room and brings the investigation to a close. Meanwhile Halloween pranks abound, eventually tripping even Tony.

A Marine sergeant dies of gunfire during an alleged armed robbery; Gibbs and company investigate. Gibbs responds to a call for help for his dad; Tony and McGee take over; Abby provides an important fact.

At night at Quantico a hit-and-run driver kills a woman Navy petty officer; while investigating, Gibbs and company find a suspect, who has a solid but complicated alibi; the gang, a lawyer, and a local cop figure out the whole thing.

A security system detects a bug on the person of the SecNav; Tony contacts the NSA, where he finds a two-year-old paper describing such a breach; one man dies; the author helps the gang to nail the bad guys; Gibbs wants to keep her around.

A clown kills a Marine corporal; while investigating, Gibbs and company find Fornell, Diane, and her boyfriend, who says that he's someone else, and that he knows the clown. All the pieces come together, and the team bust the main bad guy.

Within 30 miles of Washington, DC, eight kids in Navy and Marine Corps families have suddenly become badly ill, requiring treatment in ERs and ICUs; Gibbs and company investigate; Carol, of the Naval Medical-research Center, joins the effort; immediately the number of sick kids grows to 14, then 19, 23, 28, and 34, and none of them responds to treatment. Duckie announces the first fatality, who was a veteran of Vietnam, then he describes the cause of death and the treatability in the kids. Abby says that she has misidentified the particular nature of the illness, so she, Jimmy, and Carol keep working, and they eventually nail it. Abby gives Jimmy a lecture about kindness, optimism, and parenthood. Then the gang identify an international traveler who in many places has recently encountered many kids and the fatality. Meanwhile Vance has three tense chats with his estranged father-in-law and then a nicer one.

A Navy petty officer dies of gunfire in a park in Washington, DC; Gibbs and company investigate; Hollis helps. The gang find an accessory for hire to a terrorist. An explosion kills six and injures 22, including Delilah. [Continued.]

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.

Ellie's gut says that Parsa is in his home district in NW Pakistan; there a SEAL team captures him alive. Gibbs, McGee, and Ellie fly to an aircraft carrier, where Gibbs and Ellie question him. Ellie gets into a bind, but Gibbs saves her.

An overturned van in Washington, DC, contains body armor, which Abby shows to be faulty and fatal; Gibbs and company find the body of the driver, then the source of the bad gear and the path to the troops in the Middle East. Justice wins.

When Tony seeks to question a man who appears to impersonate a Naval officer, the man draws a pistol; Tony kills him. The dead man proves to be a private investigator who had become involved in international intrigue. The gang sort it out.

Backstage before a charity-benefit concert in Washington, DC, an explosion kills a Navy petty officer first-class; Gibbs and company investigate; Abby fingers the bad guy, McGee finds out about him, and Gibbs and Ellie catch him at work.

In New Orleans, Louisiana, two local special agents of the NCIS, Pride and LaSalle, start to investigate the death of Dan McLane, who was not only a member of the US House of Representatives but also both a retired Naval Reserve commander and a retired agent of the NIS (before the NCIS); Dan had worked with Franks and had served as a mentor to both Pride and Gibbs; King Pride, a former partner of Gibbs, goes to Washington, DC, and spends time with Gibbs. Inter-agency intrigue begins; the FBI seizes control; a joint FBI-NCIS effort proceeds; Fornell joins the hunting party; the Gibbs team start producing results; King and Gibbs use an old-school technique; LaSalle in Nola says that he suddenly feels new respect for the Great Lakes office. An FBI agent in Nola dies in the same way as Dan; King goes back there, and Gibbs and Ellie go with him; Abby provides answers; the bunch in Nola follow the breadcrumbs left for them. [To be continued.]

While investigating the death of a US congressman, the Gibbs team and the gang in Nola continue to seek both a killer and a connection to an old case. Another man dies. Ducky suggests a theory, and the bunch put all the pieces together.

Delilah finds a clue, which may help to solve the alleged death of a US Navy lieutenant, Kit, two weeks ago in Budapest, Hungary; then her boss orders her that she has never seen it; however, she surreptitiously speaks with Tony, McGee, and Gibbs, who sends Tony and McGee to check for chinchillas and to find evidence. Then Tony and McGee meet a man who claims to be an agent of the CIA, who tells a wild story to Vance and Gibbs, and who asks them to back off; still, though, Vance tells Gibbs and Ellie to continue pushing quietly. Abby and Jimmy, interpreting the evidence from the chinchilla hunt, paint a picture of Kit, who appears to be alive. The director of the CIA backs out and leaves the case to the NCIS. Delilah finds that Kit has left breadcrumbs; Kit encounters Gibbs and Ellie, and Tony joins them. Kit provides illuminating answers, and the gang finish putting the pieces together, so Tony and McGee grab the bad guy, and McGee and Delilah give Kit a ride.

A distracted texting driver runs over the dead body of a Naval officer; Gibbs and company investigate; they find a connection to a previously unreported rape of a drugged victim. The team figure out everything, and they catch the bad guy.

During a court-martial of an Army first lieutenant, a Marine photojournalist disappears before he can testify; while Gibbs and company lend a hand, they find the body of the Marine, solve his murder and another one, and arrest two bad guys.

Tony goes to France to escort an admiral's daughter, Amanda, back to DC; meanwhile Gibbs and company investigate a death. Tony and Amanda run into trouble, work it out, find solutions for all seven executions, and report to the admiral.

The team must investigate a prison escape without Gibbs as he heads to Stillwater after his father's death.

Gibbs and McGee are shot down in a Naval helicopter over remote parts of Russia while on a mission to escort an NCIS computer geek safely home. Meanwhile, the gang at home anxiously work to help bring them all home safely.

A Navy Commander is murdered near the White House, it is learned that he was on his way to talk to the President. Gibbs and his team must determine if it is because of his relationship with the President or because of his marital problems.

Flashbacks into his past help tell the tale for Dr. Mallard as he and Bishop travel to England in search of answers to find out why an Englishman murdered in the United States would have a list of deceased Navy men on his person.

After a scientist is decapitated by a strangulation device in a park, Gibbs and his team search for the woman who was her former research partner in Russia in order to learn who is behind her murder. They learn it may be a familiar foe.

While the NCIS team is on a training exercise with CGIS Special Agent Abigail Borin, Gibbs spots a man overboard. It leads him to board another ship called The San Dominick, and he soon discovers that it has been taken over by pirates.

The wife of a Navy Seal is murdered, and the NCIS team discovers she has a background in criminal forensics and recently visited a serial killer in prison seeking his help with another sociopath. Gibbs and company must figure out who it is.

While investigating the death of a retired Marine Master Sergeant, Gibbs and the NCIS team discover there is a possibility that his death may be connected to another Marine who was MIA from the Vietnam War.

A former Navy hospital corpsman gives aid to the victims of a wreck; local officials arrest her for practicing medicine without a license; Gibbs and company find the other driver, his killer, and a lawyer who makes a deal for the corpsman.

On the eve of Thanksgiving, DiNozzo and Bishop experience a weather delay at the D.C airport when Gibbs informs them of an elevated terror threat specific to area airports. An impostor posing as an air marshal leads them to the real threat.

Tis the season to be hacking. In a Christmas letter to his father, McGee describes in detail a case in which he, Gibbs and the rest of the NCIS team investigate the hackers who are responsible for the Internet going down in the D.C. area.

The NCIS team investigate a series of crime scenes that appear to be copycats of previous cases. Meanwhile, two of Gibbs' ex-wives show up at a crime scene to discuss something important with him.

Gibbs and the rest of the NCIS team, along with FBI agent Fornell are on the hunt for an American born terrorist who was detected in Syria but is now back in the D.C area.

When an openly-gay Navy Lieutenant who was about to be awarded the Medal of Honor is murdered, Gibbs and the team investigate. Meanwhile, Breena goes into labor.

DiNozzo returns to the military academy he attended as a teenager after a murdered Marine and alumni of the school is found clutching the photo of a current student. Also, Bishop and her husband invite Gibbs and the team out for a special dinner.

Gibbs and the NCIS team continue to track down the Russian terrorist Sergei after two young Marines are killed in a bombing. Agent Fornell struggles to cope with the recent shooting death of his ex-wife at the hands of Sergei.

A covert identity created for one of Gibbs' undercover cases 20 years ago resurfaces after a murder victim is found living under the alias.

After a Vice Admirals aide is murdered, Gibbs and the NCIS team theorize that it was because of a valuable painting in her office. DiNozzo's father is more than happy to help with the investigation by sharing his knowledge of the artwork.

After the body of a thief is found in a Marine's house, NCIS discovers the calling card of a terror group Delilah and the Department of Defense have been tracking. Margo Harshman guest stars.

A petty officer's murder provides clues to a 40 year unsolved airport bombing which Gibbs and DiNozzo have been reexamining recently.

DiNozzo is partnered with his girlfriend, ATF Special Agent Zoë Keates, after evidence reveals that the murder weapon in an NCIS case was originally purchased for the controversial ATF sting, "Operation Fast and Furious." Also, Anthony DiNozzo Sr. returns to town for a special dinner to meet his son's girlfriend.

Gibbs and Bishop travel to Afghanistan when a murder investigation is linked to a terror group holding a Marine hostage. Meanwhile, Tony is annoyed when McGee steals his gig as the face of the NCIS recruitment brochures.

Special Agent Ned Dorneget from NCIS cyber operations assists the team when a Navy ensign who worked in the Office of Naval Intelligence is murdered. Also, the team discovers that Jake and Gibbs have become good friends.

The NCIS cyber case turns into a united global effort after evidence confirms "The Calling," an international terrorist group that recruits children through the Internet, has been purchasing German S-mines off the black market.

NCIS feverishly investigates a global terrorist group that is recruiting teens via the Internet, following a deadly bombing overseas that results in an emotional and surprising loss for the team.

Gibbs fights for his life after being shot by Luke Harris. Meanwhile, Agent Tony DiNozzo and CIA officer Joanna Teague travel to Egypt to take down The Calling.

Gibbs asks the team to work on a case with a DEA Agent to bring down a drug dealer who is connected to Gibbs and the agent.

Hours after calling Gibbs about a possible case, a Marine is found dead in Quantico; McGee and Bishop pose as a married couple.

Vance partners with Gibbs and returns to field duty when a murder case is connected to a former NCIS agent he put in jail for stealing evidence.

During an investigation, Abby is trapped in a pharmaceutical lab when armed men enter the building and take hostages.

When a petty officer is murdered, the crime matches a local serial killer's method of operation; Delilah and McGee prepare to move in together.

NCIS investigates the death of a retired Navy officer whose son was convicted of a murder 16 years earlier. A flawed forensic test from that time can prove whether the son is the real murderer or if he is innocent of the crime.

DiNozzo is reunited with his ex-girlfriend, Jeanne Benoit, when insurgents in South Sudan attack a group of volunteer doctors, including her husband. DiNozzo and McGee travel to the crime scene for the joint murder and kidnapping case and join the search for the missing doctors. Jon Cryer and Scottie Thompson return.

A Petty Officer, accused of killing an ex-girlfriend, is set free on mistrial. Professing to be innocent he asks NCIS to investigate and if necessary court martial him. Bishop and her husband have marital problems.

The Secretary of Defense turns to NCIS to help a sailor dying from leukemia locate a bone marrow transplant after two of his siblings are killed in the line of duty. Meanwhile, Bishop returns home to Oklahoma for Thanksgiving after learning of Jake's cheating.

After Ducky is attacked by a man claiming to have information about his half-brother who died decades ago, the NCIS team searches for the perpetrator, as Ducky recalls the final emotional days he had with his sibling. Also, with the holidays approaching, Bishop and Jake (Jamie Bamber) discuss the future of their relationship. Adam Campbell returns as "Young Ducky."

Gibbs and his team work with Pride and the New Orleans team to find Abby's brother and figure out why the passengers and crew of a private plane he catered were poisoned.

The investigation of a seaman's murder uncovers the resurface of a human-trafficking ring, while McGee hopes to spend the night with a colleague during a power outage.

The team investigates the murder of a deep-sea diver outside a high-tech decompression chamber where the body and suspects have to stay for four days.

The team partners with the FBI to rescue the kidnapped daughter of Sarah Porter.

Dr. Cyril Taft feels the rush of an NCIS case when he's assigned to operate on Gibbs' suspect and discovers key evidence.

The team member's plans are interrupted when they discover discrepancies in what appeared to be an open and shut case.

Gibbs tries to connect with a wounded Special Ops sniper when an American couple is attacked in the same area in Iraq where the sniper's team was ambushed.

The wife and mistress of a Navy Public Affairs officer accuse each other of murdering him, so the team must figure out who's lying.

Tony's identity is stolen by multiple perpetrators who proceed to blackmail senators.

A family owned mortuary ordered a bunch of caskets from an overseas company. When they go to unload the shipment, they find that one of the caskets already has a dead body. There are ties to a prison break of someone NCIS helped put away.

Gibbs and the team investigate a military home invasion thwarted by a 14-year-old, while Vance and Fornell head to London to continue pursuing the escaped British spy.

The team continues the international manhunt for an escaped British spy while a colleague fights for their life in the ICU.

The NCIS, FBI and MI6 teams continue the international manhunt for an escaped British spy who's targeting current and former agents. Anthony DiNozzo bids farewell to NCIS.

The team investigates a car explosion with a connection to an agent who went missing six months earlier; Gibbs asks NCIS Special Agent Alex Quinn to shadow his team.

Torres and Quinn adjust to life on Gibbs' team while investigating a death at a High School reunion.

A marine sergeant falls from a building, it appears she attempted suicide, but her psychiatrist, Dr Grace Confalone, urges Gibbs to investigate her attempted murder.

Gibbs, Quinn and Palmer head out to sea when the body of a navy lieutenant is found on a destroyer during a tiger cruise.

Gibbs sends Bishop and Quinn to Philadelphia to work with MI-6 Officer Clayton Reeves on the murder case of a British operative. Meanwhile, Quinn deals with the NCIS case that caused her to leave the field.

When a petty officer escapes from her kidnapper, the team finds a connection to her missing husband.

Torres breaks protocol when he identifies a suspect that is wanted by ICE; Abby, McGee, and Bishop try to woo Anthony DiNozzo, Sr. Into subletting his son's apartment.

Bishop questions her previous work at the NSA when she's sent to Gitmo to collect evidence for a Navy chaplain murder case. In the meantime, her brothers visit for Thanksgiving and want to know from her co-workers who she's dating.

The team investigates threats against Congresswoman Jenna Flemming, while Vance oversees temporary protection detail.

Ducky looks back on a choice he made 37 years ago when evidence in the murder of a Navy captain is linked to his dead mother.

The team searches for new leads when an undercover mission to apprehend a businessman who's committing acts of terrorism to manipulate the stock market is compromised.

When Gibbs spots the brother of a Most Wanted suspect, he assumes an old alias and goes undercover with their anti-government militia.

During a hit-and-run investigation, Palmer tries to prevent a stranger from jumping off the ledge of a building.

The team partner with "The Sherlocks" - one of whom is Anthony DiNozzo, Sr. - to investigate the murder of a petty officer outside D.C.

When Abby's homeland security think tank is compromised, the team realizes that a theoretical terror playbook has been stolen.

Bishop is more determined to avenge her boyfriend's murder when the team finds a new lead in the Chen case. In the meantime, Torres teaches his fellow agents the art of pick-pocketing.

McGee's apartment is torn apart by a robber looking for a valuable item hidden by the previous tenant, a convicted criminal.

To honor a sailor's dying wish, the team reopens a murder case that was originally ruled an accidental death.

The team must rely on an irritable Vietnam War veteran to solve a Marine's murder.

McGee and the team race to find the hacker responsible for infecting a vice admiral's laptop with ransomware.

The murder of a Marine is linked to an old dirt bike gang Torres joined while undercover.

The team partners with the Mounted Police to solve a series of murders in a National Park.

The stress of McGee and Delilah's upcoming wedding lands Delilah in the hospital; the NCIS team investigates the mysterious death of a healthy, young petty officer aboard a Navy destroyer.

Gibbs, McGee and Torres travel to a remote area of Paraguay, controlled by a violent group of rebels, in an attempt to locate a missing Navy Seal who disappeared during an unsanctioned trip.

The team continues their search for Gibbs and McGee two months after they went missing fighting rebels in Paraguay; Vance and Torres are summoned to a congressional hearing regarding the fallout from the Paraguay mission.

NCIS investigate the body of a murdered Navy lieutenant, who disappeared over a year ago; Gibbs and McGee must pass a psych evaluation to officially resume working.

When an undercover cop suddenly reappears after faking their death 10 years earlier, chaos ensues.

The NCIS team, including recently transferred Special Agent Jacqueline Sloane, investigating the kidnapping of a sailor during a storm that shuts down Washington DC.

After Reeves sees his friend get kidnapped, the NCIS team discovers the primary suspect disappeared two days ago with confidential military information. Also, a photo from McGee's teenage years becomes a popular meme.

After a petty officer is found murdered, McGee spends hours on the victim's ham radio trying to locate a key witness. Also, Palmer asks co-workers to donate to a charity that builds playgrounds for kids of all abilities.

Gibbs begins his own investigation when a convicted felon swears he was framed; FBI agent Fornell joins the team.

An NCIS person of interest in a bribery and fraud case is found murdered after a runner is led to his body by a strange voice. Also, McGee and Delilah disagree on whether to find out the baby's sex.

Turkey day plans are on hold while tracking international arms dealer Andre Yorka, who recently murdered an MI5 officer who was Sloane's close friend. Also, Abby races Delilah to the hospital when labor for the twins starts 3 weeks early.

Torres and Sloane run protection detail for a U.S. senator in Afghanistan during the holidays and must return to the States when they learn the senator's son is in the ICU.

Torres and Bishop go undercover as a criminal couple for hire during a sting operation.

A Navy Lieutenant JAG lawyer that appeared to have a happy life is found dead by her parents in an apparent suicide. Capt. Bud Roberts helps in the investigation.

After McGee and Torres visit the home of a high schooler who witnessed a hit and run, her parents flee with their daughter, leaving NCIS in the lurch.

When the body of a missing Navy commander is found, Gibbs and his team are ordered to work with former FBI agent Tobias Fornell, the private investigator who was hired to find him.

NCIS makes a deal with Paul Triff to give him a 48-hour furlough at his former residence, now McGee's home, in exchange for information to convict Gabriel Hicks.

The team works to clear the name of a retired Marine sergeant when cyanide is found in one of the packages he sends to active-duty Marines.

Gibbs and Ducky see an antique war stick on television that could be the missing murder weapon to a 16-year-old cold case.

The headquarters are evacuated when the team finds a body and bomb materials on the roof of the squad room.

Gibbs is granted protective custody of a 10-year-old orphaned refugee when a case reveals she is the target of a violent gang.

NCIS searches for a petty officer suspected of assault who escapes when the sheriff transporting him crashes into a lake. Also, Torres works closely with Annie Barth, a key blind witness who heard vital evidence needed to solve the case.

A daughter begs Gibbs to investigate her mother's murder because she believes the police convicted the wrong man. Abby receives a hard to get reservation at a new restaurant that is cold like an igloo.

When evidence reveals an NCIS team member is a hitman's latest target, the team must search through old case files to determine who is seeking vengeance.

While Gibbs attends the memorial service for a friend who was lost at sea, he discovers that the deceased has been hiding in a fallout shelter after his boat was attacked and he swam to shore.

Sloane is certain she saw the man who tortured her in Afghanistan, leading Vance and Gibbs to fear she'll risk everything to destroy him.

Vance is still missing, and Gibbs is assigned as acting director while the team searches his whereabouts.