A Navy captain is held hostage in his own office; the agents pursue a serial killer in Florida; and a Marine helicopter is discovered abandoned in a crop circle.
A US Navy captain is held hostage in his own office while his wife and blind daughter are abducted, and the kidnappers try to extort a large sum of money from him for his family's release. The NCIS team is soon on the case, but initially struggles to identify the chief assailant.
Gibbs investigates the discovery of a woman's mummified remains, following a trail of clues that takes him and the team to Florida, where they search for another victim who mysteriously disappeared. One of their few leads is a manual on the secret of being a good wife - which eventually points them in the direction of a serial killer.
A marine helicopter is discovered abandoned in a crop circle with its pilots missing, and witnesses report seeing strange lights in the night sky, adding to the intrigue surrounding the case. Gibbs orders the sightings to be kept under wraps for fear of attracting the attention of UFO enthusiasts, before uncovering a dark secret involving local residents. Guest starring Timothy Bottoms (The Last Picture Show).
An investigation into the rape and murder of a woman revives harrowing memories for Ducky, who once worked on a similar case in which the killer was never captured and vowed to return. Bafflingly, both victims were civilians dressed in the uniform of a lieutenant, and each had a trident symbol carved into their neck. Starring Mark Harmon and David McCallum.
An accident at a Navy bombing range brings to light an area used by the Mafia to dump bodies. One of the corpses is identified as a missing FBI agent, so the team investigates the events leading up to his death. Crime drama, guest starring Joe Spano, with Mark Harmon.
Gibbs and the team find themselves in deep trouble with the FBI as they try to protect a veteran naval officer who has caught the attention of an al-Qaeda cell. A breakthrough convinces them they have discovered the bomber targeting her, but things are not quite as they seem. Mark Harmon stars.
A US Marine veteran confesses to the murder of a friend 60 years previously, but Gibbs decides to investigate further rather than take his story at face value, hoping to save the elderly Medal of Honour recipient from a spell in prison. Drama, starring Mark Harmon and Michael Weatherly.
Gibbs and the team arrest an ensign in connection with the death of a Navy commander who had recently undergone surgery, but Abby believes they have got the wrong man. Another fatality soon follows - and it falls to Tony to save his colleagues. Starring Michael Weatherly.
A marine's wife kills an intruder and later claims he tried to rape her. The team embarks on a mystifying wild goose chase through a stack of old case files and eventually discovers the woman was leading a double life while her husband was serving overseas.
Tony poses as a convict and takes part in a bogus jailbreak as part of an undercover operation to recover millions of dollars' worth of art and archaeological finds looted from Iraq - but disappears while manacled to a murderous fellow inmate. Guest starring Frank Whaley (Pulp Fiction), with Michael Weatherly.
A private investigator finds the body of a missing Navy officer in a car at the bottom of a lake and Gibbs reluctantly allows him to assist the investigation into the cause of death. The promise of a $1million reward proves to be a major incentive for the outsider, and the discovery of a bullet leads to suspicions that the man was murdered.
The suspected murder of a petty officer turns out to be a ghoulish practical joke - but a genuine death follows shortly afterwards. As inquiries proceed, local investigators are also assigned to the case - and prove to have personal characteristics remarkably similar to those of Gibbs's staff. Crime drama, starring Mark Harmon and Pauley Perrette.
Ducky identifies two dismembered bodies as those of a prosecutor and a sheriff he worked with on a rape case 10 years previously, and realises he could be the killer's next target. Despite Gibbs' attempts to protect him, he is later kidnapped - and the team's search for clues leads to a macabre showdown at a funeral home. Starring Mark Harmon, David McCallum and Pauley Perrette.
A woman claims to have witnessed the murder of a sailor, but a lack of physical evidence causes the team to question what actually took place. Spurred by his gut instinct, McGee perseveres in his search for clues and soon discovers there is more to the case than he could have imagined.
The team is called to investigate the discovery of a US Marine's body at the foot of a cliff. Gibbs immediately suspects the man's ex-wife and his best friend are guilty of murder, and tries to turn them against each other. Meanwhile, Abby puts her technical skills to the test by trying to repair a camera that was broken during the victim's fall.
The body of a petty officer is found lying in bed next to a barman - but he insists she is not the woman he brought home with him the previous night. The investigation leads Gibbs and the team to the victim's sister (R'n'B star Mya), who is a singer in a rival bartender's dance club. Drama, starring Mark Harmon.
Gibbs and the team try to find out who is responsible for sending a parcel containing a pair of blue human eyeballs to the home of a petty officer who works in Intelligence. However, the recipient of the organs commits suicide during the course of the inquiry, which leads the investigators to suspect one of his lecturers, who is working for the CIA in Panama.
A petty officer is killed while competing in a swimsuit contest, raising fears she may have fallen victim to a jealous rival, or even a stalker. Gibbs' investigation leads to the discovery that the victim was taking yoga classes - and this provides him with the breakthrough he needs to solve the case. Crime drama, starring Mark Harmon and Pauley Perrette.
An officer is found dead, and evidence initially suggests she committed suicide as a result of a nervous breakdown. However, a sceptical Ducky believes foul play was involved - and the team later discovers the victim was caught up in a love triangle. Kevin Quigley guest stars.
A US Marine is murdered, but it is not long before the prime suspect is also found dead. Tim and Abby discover a clue to both killings in an e-mail that suggests the victims were involved in a game with deadly consequences. Drama, starring Sean Murray and Pauley Perrette.
A US Marine suspected of murdering a girl is killed in Iraq, and a search of his personal belongings reveals her body. Most members of the team believe they have found conclusive evidence of his guilt - but Gibbs suspects there is more to the situation than meets the eye.
Tony is infected with a deadly virus sent through the post by shadowy figures who demand the details of a long-closed case be made public in exchange for the antidote. McGee and Gibbs set out to identify the culprits and find a cure for the disease. Michael Weatherly and Mark Harmon star.
The team's old enemy Ari Haswari returns, working on behalf of a secretive terrorist faction. Gibbs is distressed to learn he is the next target, but does not realise the killer has another more complex scheme in mind. Guest starring Rudolf Martin, with Mark Harmon.