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When a death of a Marine leads the NCIS team to a government think thank with employed child prodigies, the team has to protect a 12-year-old child who may be the next target of the killer.

The team needs to use other resources when an attempted robbery leads to the death of a Lieutenant and the entire city suffers a major blackout.

Vance's family is once again put into danger when an assassin from his past returns to threaten their safety, and the team works on helping Vance face his troubled past.

Prompted by a murder investigation, Gibbs and his team need to play family counselor to Gibbs' former mentor, Mike Franks, hoping to prevent an international conflict.

When a Marine known for his love of practical jokes is found dead on Halloween, the NCIS team is called in to investigate, and they soon learn that his jokes may have been the reason why someone killed him.

The NCIS team is called in to investigate the murder of a Marine found halfway around the world, and the investigation takes a surprising turn when Ziva turns out to be connected to the deceased Marine.

When a blogger that accused NCIS of a cover-up turns up dead, the NCIS team has to find out who killed him and take another look at the closed case.

The team discovers the bizarre death of a Marine and his two friends may be linked to their past, but its Gibbs who ends up taking a trip down memory lane.

With the past still left unresolved, the NCIS team must find a way to put it aside and concentrate on another investigation, but while looking for Ziva's replacement, the team comes to a stunning revelation.

Ziva's homecoming to Israel is not a happy reunion with her father who is the head of Mossad. While Gibbs and the team are there, Gibbs is forced to make a decision which is felt throughout NCIS.

After a security breach at the SecNav's residence leads to the death of an ICE agent, Gibbs and the team are forced to work with ICE and the FBI to find his killer.

With the appearance of Mossad agent Michael Rivkin, Tony is forced to question Ziva's loyalty to NCIS. Meanwhile, in Los Angeles, Special Agent Callen goes undercover to try to catch a terrorist cell while OSP psychologist Nate Getz discovers the startling truth about Gibbs and Special Agent Lara Macy's relationship.

The team heads to LA to work with the team there to solve a murder investigation, which soon turns into something bigger. Meanwhile, Tony begins snooping into Ziva's private life.

When a government scientist goes missing, Abby is recruited to carry on his work, but the team worries that she may meet the same fate as her predecessor.

Gibbs and the team must work with the shady Trent Kort to put away one of NCIS's most wanted.

When a young boy finds a murder weapon, the team must trace ownership of the gun to find who used it last and who was murdered.

A boxer's death leads Vance to start up his own investigation, causing a sparring match with Gibbs.

While working on a case, an NCIS special agent is murdered in the same way as a businessman of Arizona, the native region of the agent. The only clue is a painting send to the Gibbs team, just before dying. The investigation will lead Tony and Gibbs in Arizona while the rest of the team will work on painting and the search for the assassins. The uranium will be at the center of the case and Gibbs will use his talents as a sniper to avoid death.

A Navy Lieutenant is found dead in a large suitcase in a luxury hotel. But the lieutenant had been the witness in a NCIS investigation when Tony was the leader of the team some years ago. Gibbs gives the direction of the investigation to Tony.

A Marine was found dead in his home town. He was found dead by young people playing with firearms. The dead Marine has a past in the Latin gangs.

The NCIS team investigates a bizarre murder of a sergeant whose suspicious private life might be the reason why he got killed.

Secrets from Ducky's Clandestine (secret) past come to the forefront after he's Attacked (stabbed) at a Crime Scene. The team uncovers disturbing secrets from the good doctor's past.

The Team is Forced to uncover the truth behind the murder of a guard after a Women's prison riot traps one of their on. Also Mcgee becomes held captive in the Women prison.

During the week of Christmas, The Team is Forced to work overtime when they discover their prime suspect had been dead for 17 years.

After a petty officer dies in a car crash, the team suspects foul play when their investigation leads them into the violent world of underground street fighting.

The team must rely on information from some questionable individuals to stop a criminal bent on stealing government secrets.

A shocking secret surfaces when the team is pushed into a war game, and one team member will face serious consequences.

Gibbs is put in a tough spot when he has to handle an assistant rookie assigned to his team by Vance to investigate a bank robbery case.

Gibbs and his team are search for a cyber serial killer who takes videos from his victims. The team quickly finds out that the video's of the dead victims are false.

Director Vance shakes hand of a young female NCIS special agent, who has just received a citation.

The hunt for a marine's murderer puts Gibbs on a collision course with an old friend FBI Agent Fornell.

A Marine gets in a brawl inside a bar. When the bouncers kick him out, he finds two Marine buddies barely breathing between the trash cans. One doesn't survive and the team is called in to investigate. Gibbs goes back to his home town, where we meet his father.

When a young female Lieutenant Commander's body is discovered, shot in the back, suspicion falls ona prominent U.S. Senator who served in the Marines with Gibbs.

While stationed on an aircraft carrier, DiNozzo finds that a Navy Lieutenant's apparent suicide may be connected to a larger, deadly scheme.

"Last Man Standing" - The murder of a Naval Petty Officer leads Gibbs to uncover a shocking connection between the case and Director Vance's decision to disband his team!!!

The team continues to race against the clock as they hunt for the killer who took the life of one of their own.

A search for the killer of one of their own puts all the agents at risk.

Palmer becomes the main target of a mysterious killer who he recognizes as a person from his past.

While on assignment undercover, Ziva's task takes a shocking turn for the worst when the serial killer the team is tracking becomes suspicious of her.

After a mortar attack in Baghdad is ruled a murder, two NCIS members are sent into the heart of Iraq to handle the investigation.

When the body of an arms dealer surfaces, the team is put under FBI investigation for his murder and Jenny Shepard becomes their number one suspect.

When the team looks into a fatal dog mauling, Abby risks her career to prove the dog is innocent. Meanwhile, Gibbs begins to get closer to the secret Jenny is keeping.

When naval radar goes missing, NCIS stakes out a warehouse to catch the thief. However, plans change when the team witnesses a murder instead.

An investigation ensues when a Muslim Marine is found dead near a mosque. Out of respect for the families beliefs, Ducky refuses to perform an autopsy.

The team is assigned to find a Marine who thinks he's still in Iraq. Following a violent encounter, the NCIS team learns that the man is part of a top-secret experiment.

The team watches over a 9-year-old boy whose father is a wanted man. Their search for the boy's father leads them into the wilderness where they uncover the truth about the man's past.

The NCIS team looks into the assassination of a Navy Admiral. The case takes a shocking turn when they encounter a woman searching for her husband, a refugee from Africa.

Gibbs helps an old friend who is still coping with the death of his daughter who died 15 years earlier. As they investigate, Gibbs stumbles across a shocking conclusion to her death.

The team investigates a mysterious death on a top-secret research ship. They soon uncover a deadly secret that could threaten their lives as well.

The NCIS team is called when a naval officer threatens to jump off of a rooftop. Soon the attempted suicide turns into a murder investigation.

Gibbs and his team identify a body labeled as a "John Doe" as a felon known for erasing pasts.

Gibbs and Mann team up for the investigation into a Marine Captain who had access to classified information. Things becomes increasingly complex when one of the witnesses is the man's ex-wife.

During an autopsy, Ducky comes across a discovery that spurs on a search for a missing child. Meanwhile, Tony faces his feelings for Jeanne.

The NCIS team and an arms dealer confront in a final showdown that results in an explosive and deadly ending.

When the NCIS Director returns from Europe, Gibbs and the team prepare for Homeland Security polygraph tests. This leads to tight secrets among the team to be exposed and reveals the biggest secret in NCIS history. To make matters worse, DiNozzo and his girlfriend are held captive by a drug dealer.

Gibbs puts off his paperwork for his "acting" director duties in order to lead an investigation into a murder victim found in a taxi headed for NCIS. Meanwhile, Jenny uncovers a secret about her past.

A blind photographer inadvertently films the murder of a petty officer. With little evidence, the team has Scott re-create the scene of the crime. Meanwhile, both Tony and Gibbs struggle with their relationship problems.

Director Shepard risks his life and agrees to meet an informant alone, but the meeting takes a turn for the worst and her contact is killed. Gibbs and NCIS try to gather the information the man was about to supply.

McGee is shocked when an officer he based his book on is found murdered. With few leads, the team forces McGee to find out everyone who has had access to his secret manuscript.

The team learn a tip about terrorist activity was false and resulted in the death of two agents. Agent Cassidy, feeling guilty over the deaths, works with NCIS to track down the people who made the tip.

The team investigates when a Marine, who was thought to have frozen to death, wakes up o Ducky's autopsy table. With the Marine on life support, the team must follow his steps days before he was left to die.

Gibbs and the team look for a potential serial killer when an explosion at a military cemetery mausoleum reveals a cache of dismembered human remains.

When Ducky and Abby confirm that they have identified the remains of at least five people, the NCIS team immediately begins notifying the families in the hopes of making some connection between the seemingly random selection of victims. But when the suspects are narrowed down, even Gibbs is surprised with the final outcome. Meanwhile, Abby turns to Gibbs with a personal problem.

The NCIS team suspects foul play when a Navy Lieutenant is the victim of radiation poisoning.

Gibbs and the team collaborate with the ailing Lieutenant, who is an inspector for the International Atomic Engery Agency (IAEA), as they recreate his routine in an effort to figure out when the contamination took place. Gibbs is convinced that whoever is responsible for poisoning the Lieutenant was trying to ensure that his next scheduled inspection would not happen. But when the dying man insists that only his two closest colleagues knew of the upcoming trip, the team works to find the culprit. Meanwhile, Tony is surprised when he sees a softer side of Ziva.

Working with the local officials, the NCIS team originally believes that the sailor died of an unintentional drug overdose. But when they uncover a mysterious laminated card, Abby discovers an ominous message written on it in blood that quickly makes the team switch gears to find the sailor's murderer. Meanwhile, Tony bonds with one of the local detectives working on the case.

Ducky is taken out of the autopsy room and put undercover in order to help stop the illegal sale of the Navy's weapons system. When the team captures one international arms dealer, the team learns the weapons system is about to be sold to a dealer known as La Grenouille. With Ducky as a decoy, Gibbs is able to set up a meeting La Grenouille. However, right before NCIS makes their move, they learn another agency has plans for La Grenouille as well.

The team must find a terrorist who has a missing, toxic chemical weapon in their possession. After 10 kilograms of toxic chemicals go missing, Gibbs and the team must race against the clock to find it before it is too late. The team is shocked when they discover that the weapon is in the possession of Mamoun Sharif, a wanted terrorist.

When a Marine Lieutenant from Saudi Arabian descent is murdered in a hotel room in a small town, NCIS is called in to investigate. However, the local Sheriff's department already cleaned up the crime scene and an autopsy was performed. Involved in this case are an Iraqi who was relocated to the US for providing intelligence and some locals.

The whole team has to attend sexual harassment classes. They're having a bit of fun with it until they are notified of a dead Navy Lieutenant involved in a research project. Seems like someone among the scientists was not too happy with the whole situation involving a robot-driven humvee.

When a burnt and mummified body is found at a Marine base NCIS is called in. They identify the remains as a serial killer which means they now have to work with the FBI.

Forgoing NCIS procedure, McGee risks his career when he takes matters into his own hands after his sister appears at his door bloodied and confused. As McGee struggles to piece together his sister's whereabouts the night before, he discovers that the NCIS team is investigating the murder of a Navy sailor who had a previous relationship with his sister. Meanwhile, as separate clandestine romantic relationships bloom for both Abby and Tony, the NCIS team discovers McGee has a secret of his own.

When suspicious activity surrounds the death of a decorated Marine veteran, the NCIS team works to clear his name. The NCIS team investigates when an honored Marine veteran falls to his death at a hotel. After quickly determining his death was not a suicide, the NCIS team discovers that the Marine was homeless but living at the hotel with the help of a maintenance man who was a fellow vet. But when compromising evidence is found in the Marine's room, Gibbs becomes determined to clear his name and prove his innocence.

A Marine Colonel is killed on a military golf course, leading the NCIS team to pair up with the Army Criminal Investigative Unit in order to find the killer. After the CIA receives a tip about an abandoned warehouse rigged to explode, McGee uses his computer knowledge to get into the CIA informant database to uncover the terrorist cell.

Gibbs and his team are called in when a marine has been attacked at his home and his daughter appears to have been kidnapped.

The NCIS team is called to investigate when a real estate agent finds the body of a missing Lance Corporal is found in a vacant house. At the scene of the crime, Gibbs and the team discover that the Lance Corporal was buried in the backyard and then exhumed. After determining his identity, they learn the Marine, who was deployed to Iraq but never showed up for duty, had two fiances. Abby uses her technical knowledge to run DNA samples from the two women and soil from the grave while Ducky uses his newly obtained Masters in forensic psychology to help NCIS implicate the killer.

Two Washington Metro cops pull over a guy who was talking on his cellphone while driving. When approaching the drive, they see a gun under the car seat. Just when they have the guy handcuffed, a car crashes into the police cruiser. Turns out the dead guy in the car is a retired Navy Petty Officer. Gibbs calls Mike Franks when they start investigating.

A female Navy Lieutenant goes missing when she's attempting to speed-date. Ziva goes undercover at such an event to find out more, and if they can catch the perp. Gibbs sports some facial hair. Ducky is busy profiling the profiles the Lieutenant made before the dating event. Ziva soon finds a possible perp, but it seems other people are involved.

A man brought to justice by Gibbs and Fornell manages to escape from prison and manages to make his way to Fornell, to ask him to reopen his case. Fornell is not amused, as he has his little daughter with him at the time. Gibbs is persuaded to come out of retirement once again to help out. The team ask around old accomplices and people the fugitive knew before he went to jail.

With Gibbs retired and boat-building in Mexico, the NCIS team must learn to work without him. As each team member deals with the absence of Gibbs in their own way, Ziva's past comes back to haunt her when she inadvertently witnesses an assassination of a military attache by her former Mossad partner. Convinced her father ordered the hit, Ziva seeks refuge at the Israeli Embassy. As the NCIS team, now headed by Tony, works to prove her innocence, Ziva reaches out to the one person she has always been able to trust.

While Gibbs recovers from an injury caused by a bomb explosion, he experiences temporary memory loss, while his team tries to stop a terrorist group from carrying out a devastating attack on the Navy.

As the team tries to track down the terrorists behind the bombing that injured Gibbs, they learn that the terrorist group is planning another bombing of 9-11 magnitude -- and that Gibbs has information about their plan. Meanwhile, Gibbs receives a visit from his former boss and mentor that conjures up suppressed memories. As Gibbs regains his memory, he finds himself on a race against the clock to fill in the gaps and stop the terrorists.

The NCIS is distressed when Gibbs is injured in a terrorist explosion while on assignment. As the team attempts to put their feelings about Gibbs' injury aside and work on the investigation, Tony steps into the role of senior agent, causing a bit of resentment from other team members. Meanwhile, while recovering, Gibbs is flooded with memories of his past that he had long struggled to suppress.

Tony and Ziva are coming into NCIS headquarters with $5 million and a drugdealer suspect, who dies in the elevator ride up. His brother wants his cash and brother back, but doesn't know he died. When NCIS is not giving in to his demands, he takes extreme measures.

An older couple is checking into off-base Navy lodging, but when they enter they are shocked to find a gruesome scene. The clerk is immediately under suspicion. We'll also meet Abby's former boyfriend, who's also a goth and runs a crime scene cleanup company.

A member of a Department of Defense Crypto unit is found dead, when she was supposed to go in and get interviewed by Gibbs. Gibbs was investigating the unit on suspicion of information leaks to a foreign country. The dead female's roommate and their commander seem shaken up when they learn of her death. Gibbs and the team investigate.

A Marine is found dead under the ice of a small pond. He was involved with helping kids get out of street gangs and join the Marines. The team gets to work on finding out who was the killer.

Somehow the NCIS team is called to the scene of a High School where a teenager with a bomb is holding some kids hostage. One of the kids is in need of her inhaler for her asthma, and another student stands up for her. When she goes to the lockers to get it, she's able to tell Gibbs what's going on inside.

A Park Ranger is taking a group of Boyscouts around Shenendoah National Park, when they stumble upon bear droppings. One of the Scouts pokes around in it, to discover what the bear ate. Instead, he finds dog tags. A search for the remains of a dead Petty Officer ensues.

Two civilian EMT's are transporting a Marine who died in a car crash but their vehicle erupts in flames when they start driving. The Marine's girlfriend who was in the car with him is still unconscious in the hospital. In the hospital Gibbs and the team meet the Marine's best friend, who may know what really happened.

When NCIS busts an automobile chop shop run by Navy enlisted men, then discover a cooler containing a human head in the trunk of one of the stolen cars. The investigation is hampered by a secretive corporation that has swathed itself in layers of insular legal obfuscation.

When the wives of two Marines are murdered, Gibbs and the team are called in to investigate. While investigating, Gibbs and the team fear the murders are racially motivated. The team works together to find the killer and protect another woman and her newborn baby who they fear are the next targets.

Gibbs and the team are called in on a weekend when a Navy Lt. Commander in charge of a shipment of nuclear weapons is apparently abducted.

The team works to piece together the Lt. Commander's location by tracking a distress call she made from her cell phone. Believing her captors have abducted the Lt. Commander to commandeer the nuclear shipment, NCIS must move quickly to find the missing woman and protect the classified location of the weapons.

While searching a Senegalese ship that they believe is being used to smuggle small arms, Tony and Ziva are captured and locked in a container while the team tries to discover their whereabouts.

Gibbs and the team investigate the murder of a supermodel filming a reality TV show on a Marine base.

At the start of the investigation, the team believes the model may have committed suicide, but they uncover a twisted love triangle involving the Marine staff sergeant working on "Boot Camp Babes," a drug addicted ex-boyfriend and a disgruntled adoptive father, who is also the executive producer of the reality show. Meanwhile, Director Shepard is annoyed when Gibbs doesn't show up at an awards ceremony where he is being honored.

When McGee kills a man while on assignment, the NCIS team steps in to back him when they discover the man was an undercover police officer.

Gibbs is furious when Director Shepard overrules him and allows the police to run their own investigation on McGee. Determined to clear McGee's name and prove his actions were justified, the NCIS team bands together to protect one of their own. Meanwhile, Tony gets a troublesome phone call from his past.

The NCIS team rallies to clear his name when Tony is accused of murder.

When a portion of a female body is found at Quantico, the NCIS team investigates and is shocked to discover that all the forensic evidence points to Tony as the prime suspect. As Abby questions her faith in her science and her ability as a specialist, she makes it her personal mission to prove Tony's innocence and find out who is trying to frame him for murder before it's too late.

When the bodies of two assassins are delivered to NCIS from overseas, Tony and Ziva assume their identities undercover and engage in a sexy rendezvous at a luxury hotel in order to find their target.

Gibbs and the team investigate when a 6-year-old boy informs NCIS his father has been kidnapped.

Gibbs quickly develops a unique bond with the young boy whose missing father is a Lt. Commander working as the Navy's liaison with a defense contractor on a highly confidential project called "Honor." The NCIS team discovers that the top-secret program, for which the missing Commander holds the only code, has been hacked and classified data has been removed. As the evidence begins to indicate the kidnapping may be a hoax, Gibbs holds his ground when his gut tells him the Lt. Commander is innocent.

Gibbs and the team investigate the murder of Marine's wife that appears to have been broadcast over the Internet, on NCIS.

The NCIS team discovers that two bored housewives, whose husbands are serving in Iraq, have been running an Internet sex site from their bedrooms. With both women now missing and an Internet file of what appears to be a murder, Gibbs and the team decide to track down the webmaster and follow the money in order to locate the murderer.

The NCIS team is called in when a Petty Officer is brutally gunned down on the freeway.

As the investigation unfolds, Gibbs and the team discover that the Petty Officer had been living a double life and had switched identities with a former colleague whose job of illegal transporting gives the team their first lead to the murderer. But the break in the case is short-lived when Abby uncovers a message the Petty Office left before dying that leads them in an entirely different direction.

Gibbs and the team are called in when a recently deceased man is found encased in a Civil War-era tomb.

Gibbs and the team discover that the corpse inside the cast-iron tomb is that of a missing Staff Sergeant who, according to Ducky, was buried alive. Using cell phone records from a phone found inside the casket, Abby tracks the victim's final phone calls to a bank and safety deposit box that contains a map the Staff Sergeant died protecting. Meanwhile, Director Shepard informs Gibbs that Agent David will now be a full-time member of his team.

Gibbs is ordered to meet with a convicted serial killer three days away from his execution in order to find out crucial information before he dies.

Under order from the Governor of Virginia, a skeptical Gibbs is forced to meet with a serial killer he helped to convict a decade before under the pretense that the killer will tell Gibbs where he hid missing bodies and give closure to the families before his death. Gibbs' instinct is correct when the killer is coy and doesn't reveal what he promised. Nonetheless, Gibbs has an NCIS team in place to re-investigate the possible locations of the victims. When a crucial piece of information is discovered, Abby and McGee use their expertise to attempt to pinpoint where the bodies might be.

Ari (guest start Rudolf Martin) continues to wreak havoc on the NCIS team as he uses its members as pawns in the game he is playing with Gibbs.

Gibbs, who is still haunted by images of Kate's death, is determined to stop Ari after he and Director Shepard are the target of sniper fire and Ducky is lured out of the NCIS headquarters by the terrorist. Though Gibbs is still uncertain of Ziva's connection to Ari, she becomes an invaluable asset when Gibbs finally comes face to face with his arch nemesis.

While the NCIS team deals with Kate's death, Gibbs' determination to finally put an end to Ari's (guest star Rudolf Martin) reign of terror mounts, on the third season premiere of NCIS.

Though he has no concrete evidence that the sniper was Ari, Gibbs is haunted by the thought that the bullet that killed Kate was meant for him. As the team works to collect all the evidence they can in an effort to stop Ari, each of them is forced to confront their emotions about Kate's violent death. Meanwhile, the director of NCIS informs Gibbs he will be leaving to take on a new position and introduces him to his new boss, Jenny Shepard (Lauren Holly), a woman with whom Gibbs has a sordid past.

The hunt for Gibbs' nemesis, Ari, turns deadly for one member of the NCIS team.

NCIS will pay the ultimate price when a hunt for a terrorist assassination team turns deadly for one NCIS team member, on the second season finale of NCIS.

Gibbs' worst fears are confirmed when he learns that his nemesis, Arab/Israeli double agent Ari (Martin), is back in Washington D.C. on assignment to kill him. Ultimately, the NCIS team discovers that Ari has a bigger plot… and they end up paying the ultimate price trying to thwart it -- the death of a team member.

When a letter sealed with a kiss is delivered to NCIS, Tony assumes it's for him and opens it, only to release a mysterious powder into the NCIS squad room.

Gibbs and the team are forced into quarantine in the NCIS autopsy room pending the results of tests to identify the strange powder. As Abby discovers the substance is a genetically altered version of the plague, Tony and Kate are placed in a bio-hazard isolation ward for fear of exposure. In the clear of the deadly virus, Gibbs and McGee race to track down who sent the letter before the deadly plague destroys one of their team members.

Gibbs and the team work to clear the name of a Navy medic killed in Iraq, who is the prime suspect in a murder in his hometown.

After a corpsman, whose actions in combat saved several lives, is killed in the line of duty, the body of a young woman who disappeared before he enlisted is found dead in a storage locker amid his possessions. Local police are convinced the corpsman is responsible for the woman's murder, but Gibbs thinks otherwise and is determined to clear the young man's name.

Gibbs and the team head back to school when a Marine in an ROTC program is found murdered on a college campus.

When the NCIS team begins their investigation, they quickly turn up a suspect but when he is later found murdered, the team is back at square one. Abby and McGee discover an email chain on one of the suspect's computers referencing a mysterious "Red Cell." Gibbs and the team discovers that the possible motive may have been a game with deadly consequences.

The NCIS team investigates when a Petty Officer commits suicide after being institutionalized for a nervous breakdown.

Gibbs and the team are stunned when Ducky tells them that the Petty Officer, who claimed to have a stalker, was in fact murdered and did not commit suicide. With the help of FBI Agent Fornell (guest star Joe Spano), the team’s investigation reveals the Petty Officer was a victim of a twisted love triangle involving her C.O., who was being investigated by the FBI for kickbacks received from Navy contractors.

The NCIS team investigates when a petty officer who recently returned from duty is found dead backstage at a local bikini contest.

Gibbs and the team trace the Petty Officer's activities since returning from sea duty and they discover a possible stalker who had just been released from prison. But when his location is accounted for at the time of the murder and Ducky's autopsy reveals the Petty Officer was pregnant, the team discovers that jealousy may be the motive for her death.

The NCIS team investigates when a pair of 'cobalt blue' eyeballs are sent to a petty officer in D.C. in a package from Paraguay.

The investigation puts Gibbs and the team on the trail of a former Navy Intelligence agent who is now a private contractor working in Paraguay. With a little help, Gibbs learns the rogue agent is involved in illegal activities and sends Tony and Kate to Paraguay to make an arrest.

The NCIS team investigates the bizarre death of a female petty officer who is found brutally murdered in the bed of a dance club bartender.

Gibbs and the team are perplexed when a dance club bartender wakes up to find the woman next to him is not only dead but not the woman he went to bed with. The NCIS investigation leads the team to her sister, Jade (guest star Mya) who is a singer in the bartender's rival dance club.

The NCIS team investigates when a Marine records his own murder on video as he falls off a cliff.

Gibbs and the team are called in when a Marine is discovered dead at the bottom of a cliff during a camping trip with his wife and best friend, who had an affair. Gibbs plays the former lovers against each other during the interrogation, hoping to get one to say the other is guilty. Meanwhile, Abby must put her superb technical skills to the test when she reconstructs the camera that was broken during the Marine's fall. Also, McGee gets himself into a very "itchy" situation while investigating the campground.

Gibbs gives McGee a shot at running a case when the NCIS team is called to investigate when a woman claims to have witnessed the murder of a sailor.

With skimpy evidence to go on, Gibbs turns the case over to McGee, who believes the woman's story is enough to continue the case. But when physical evidence of a crime isn't there, McGee pushes the team to keep looking because he senses there's more to her story than meets the eye.

As he reassembles the pieces of three bodies found stuffed in barrels months ago, Ducky is shocked when he discovers their identities.

Gibbs and the team step into high gear when Ducky realizes the bodies are those of a prosecutor and sheriff who worked on a rape and murder case with Ducky 10 years before. Ever suspicious, Gibbs feels that Ducky could be the next target of the mysterious killer because of his part in the original case, so he assigns the team the task of guarding Ducky and his senile mother. But when Ducky is kidnapped during the team's watch, Gibbs races against time to save Ducky and capture the demented killer.

The NCIS team investigates the possible murder of a petty officer that was reported by a telemarketer who heard it over the phone.

When a telemarketer reports the possible murder of a petty officer he was soliciting, Gibbs and the team work together with the local Virginia officials, whose traits are remarkably like those of the NCIS team. Using their computer skills, Abby and McGee quickly discover that the “attack” was a hoax, intentionally staged by the officer. But when the missing petty officer’s body is found, Gibbs’ investigation takes on a whole new angle.

The NCIS team investigates when the body of a naval officer missing for 2 years turns up on the bottom of a lake.

Gibbs and the NCIS team reluctantly allow the notorious private detective, who located the body, to assist in the investigation as long as he shares information. Fueling the search for the missing man is a one million dollar reward posted by his wealthy family. But when a bullet is found in the car, the missing persons' case turns into murder.

The team must work together to find Tony when he disappears during an undercover operation.

Tony goes undercover as an escaped prisoner chained to a convict who holds the key to the recovery of stolen ancient Iraqi art and sculpture worth millions of dollars. But when the GPS locator Abby planted on Tony becomes inoperable, Gibbs and the team must work quickly to find him by using other methods since Tony is unaware that the thief may be a dangerous killer.

Gibbs and his team are called to the scene when a Marine's wife kills an intruder who tried to rape her.

Gibbs and his team discover that while Laura Rowen's (guest star Megan Ward) husband serves overseas, she leads a secret life. The NCIS team tracks a trail of her e-mails to a torrid website, which indicates she may have lured the attacker to her home under false pretenses. As the investigation progresses, the team discovers that they have a serial rapist and killer on the loose who uses websites to stalk his prey.

Gibbs and his team are summoned to examine the mysterious death of a Navy commander who, after successful open heart surgery, seemingly bursts into flames.

The NCIS team discovers that the commander made an art out of making enemies and they track down a young ensign who was relentlessly hounded by the deceased. But as they take him into custody, a scuffle takes place and Kate reacts with fatal results, realizing too late that they have the wrong man. Ultimately, Tony and Ducky combine their knowledge to uncover the person responsible for the commander’s death.

Gibbs and his team must clear the name of an elderly Marine who confesses to murdering his best friend nearly 60 years ago.

An elderly Medal of Honor recipient, Ernie Yost (guest star Charles Durning), shows up at NCIS headquarters and confesses to murdering his best friend during a battle at Iwo Jima almost 60 years ago. Gibbs’ gut tells him there is more to the story and, with the help of his team who are captivated by the warmth of the honored veteran, they work to solve the mystery and keep Yost from going to prison and losing his Medal of Honor.

The NCIS team protects an Iraqi War veteran who is the target of terrorist threats.

Gibbs observes the strained relations among family members as the team tries to convince a tough and unyielding FBI agent, Lina Reyes (guest star Elizabeth Pena), to let them participate in the investigation. Just when the NCIS team thinks they have identified the bomber, another attempt is made on the pilot's life and it's clear there's more to these attempts than terrorism.

A body found on a Marine firing range leads the team to discover a Mafia dumping ground.

When a civilian’s body is found on a Marine bombing range, Gibbs and his team uncover the disturbing news that the area has been dumping ground for the Mafia for years. The team quickly discovers that their victim is actually an undercover FBI agent and that Gibbs’ FBI counterpart, Agent Fornell (guest star Joe Spano), is being imprisoned, accused of acting as a mole who has been feeding sensitive information to the local Mafia boss. Fornell denies the allegations and Gibbs sets out to expose the real spy.

The NCIS team is called in to investigate when a body dressed as a Navy lieutenant is discovered apparently raped and murdered.

Gibbs notices Ducky acting uncharacteristically abrasive and secretive after inspecting the body. When Ducky confirms his fears, he reveals to the team he has found physical evidence linking the death to a similar unsolved murder that has been haunting him for 10 years.

The NCIS team is called in to investigate when a perfectly functioning Marine helicopter is found in the middle of a crop circle.

The first job for Gibbs and the team is to find the two pilots missing from the Marine Cobra helicopter. After locating the co-pilot, who thought their scheduled training flight had been canceled, the team continues its search for the pilot amid reports from nearby town people who say they saw strange lights the night the chopper landed. While many, including Abby, are convinced the area has been visited by aliens, Gibbs discovers the truth lies in the town's secret history.

The NCIS team is called in to investigate when the decomposed body of a woman in a wedding dress is found in a cell beneath abandoned military housing.

As Gibbs and his team investigate the bizarre discovery of the woman in a subterranean prison cell made to resemble a 1950's bedroom, the evidence indicates that she had been imprisoned for months and died when her air supply was cut off. Subsequent evidence indicates that this murder may be only one in a pattern of similar incidents and Gibbs and the team find themselves racing to find another possible victim who disappeared from a Navy base in Florida.

When the wife and 9-year-old blind daughter of a Navy captain are kidnapped, Gibbs and his team are faced with a unique challenge. Gibbs and his team are called into an uneasy situation when a Navy captain's wife and 9-year-old blind daughter are kidnapped from their home. The kidnapper, who is demanding $2 million in government funds, is also holding the captain hostage in his own office via webcam. Gibbs devises a plan to plant listening devices in the office and then takes a huge risk by instructing the Captain to demand the kidnapper show a gesture of good faith by releasing his daughter before he completes the money transfer. Meanwhile, Abby and McGee use their computer skills to hack into the kidnapper's computer and trace his whereabouts.

Gibbs comes face to face with Ari, the terrorist who shot him and escaped.

Gibbs and his team believe the accidental death of a Navy SEAL, during a routine exercise, was murder.

The terrorist from Bette Noir returns with a plan to attack the President. Gibbs and his team follow the clues to reveal his identity and find Kate who is kidnapped.

From TV Guide Online: Gibbs' team investigates the death of a SEAL during a training exercise, and come to suspect that it wasn't an accident, but a murder.

When a Marine is found impaled on a tree stump, Gibbs and his team begins a search for the weapon and the murderer. The case leads them to a pawn shop known to deal in stolen military weapons where they discover an undercover ATF agent Melinda (guest star Bellamy Young) who’s also hoping to also crack the case. Gibbs brings her into his scheme to meet with a local militia leader looking to buy illegal weapons, but when the plan goes awry, it is revealed Melinda is not who she seems to be.

A marine goes missing after a date with a reporter. During the investigation, the team discovers that three former members of his unit are dead and suspect the unit commander to be a serial killer.

Gibbs and his team are called to investigate when a fellow NCIS agent is found murdered. When NCIS Special Agent Pacci is found brutally murdered, Gibbs and his team reconstruct a cold case Pacci was working on at the time of his death. The case involves the theft of millions of dollars from a Navy lieutenant who was later allegedly killed in a car crash. With the money never recovered, the clues all point to one woman close to the case who has her own startling secret.

The team is looking for an ex-SEAL who escaped from prison in search of revenge. He is decisive to find the real murderer of his wife.

When the body of a marine is found after a party in an illegal night club, the team investigates a number of possible leads - including blackmail and accidental death.

A terrorist holds Ducky, Gerald, and Kate hostage while NCIS investigate how exactly the terror organization member got a job at the navy base.

Gibbs risks his career when his former commanding officer is accused of stealing the funds.

A navy dentist stops near the parked car to help a stranded motorist who pulls out a gun. The team investigates a murder with the help from a local sheriff, Charley, when they find out about a the similar murder of the Navy civilian employee in the was going through the nasty divorce,the wife is suspected but her alibi is perfect.

The team investigates when a Marine recruitment officer is found shot to death by a sniper with a grudge, who leaves a white feather behind.

The NCIS team is called in when a severed leg bearing a marine tattoo is found in a trash bin, leading them to a small town where a murder scheme is afoot.

When a Navy commander, who was a technical advisor to a civilian contractor for a Navy weapon, is found dead on the beach, the NCIS team investigates the murder using satellite technology.

After being buried alive, a woman comes out of the grave with amnesia and the only thing she remembers is that there is a bomb aboard a Navy ship. While trying to help Jane Doe recover her identity, the team finds out that not everything is what it seemed at first.

After a marine widow receives a call from her dead husband, the NCIS team takes on the case and has to exhume the body to deduce whether the call was a prank or not.

The NCIS team head to Cuba to investigate a Navy translator's connection to smuggling at a detention center after he suddenly dies at the wheel of his car when returning to the U.S. from Guantanamo Bay.

A decomposed body is discovered in a tub of acid at a naval base and Ducky and Abby learn that the victim was a submariner. Gibbs discovers that there have been no reports of a sub crewmember missing, so he deduces that one of the subs has an imposter on board. With this new information, the team must find out which sub the man posing as the victim is in and what intentions he may have towards the sub.

An NCIS agent who used to work under Gibbs asks for the team's help investigating a case where sailors on an aircraft carrier are dying of a drug overdose, but have no history of any kind of drug abuse.

A Navy lieutenant who was reported missing nearly ten years ago has been found by a deer hunter. When the NCIS team arrives at the scene to investigate, they see that his remains have been mummified. Now, they have to find out what happened to him and what happened to the one million dollars that he had on his ship.

The NCIS team investigates when a seaman's body is found at the bottom of the sea in his dress whites, with a ceremonial sword. They discover that he was addicted to a Wizards and Warriors style role-playing game. Now, the team must figure out how involved he was in the game and how far he would go to get revenge on his arch enemy, another sailor.

When a Navy commander's body washes up on shore along with the bodies of two drug runners, Gibbs refuses to believe that the sailor who was killed, was dirty.

During a training exercise, a marine's parachute fails to open and he crashes into a parked car where two teenagers were making out. The NCIS team heads to the scene and has to determine if the marine's death was accidental or a murder.

While on Air Force One, a Navy Commander dies. Agents from the Navy NCIS decide to take the investigation into their own hands and also force a Secret Service Agent Kate Todd to help. Now the NCIS team has to figure out if the Navy Officer's death was of natural causes or not.