A young lady emerges from a shallow makeshift grave in Rock Creek Park, Washington, DC; although amnesic she says that there's no time, that there's a bomb aboard a Naval vessel, and that people will die. A passing driver aids her and calls 911; the Metro PD responds, then calls the NCIS. Gibbs and his team investigate. Kate befriends the victim and takes her into her pad, and she slowly recovers a few memories. Gibbs finds a key, then Abby figures it out, then Gibbs and Tony find a body. The ship in question proves to be ashore and inside a building. The team learn ...
A Naval officer, a SEAL diver, dies of a stab wound after swimming while testing a classified handheld sonar device, which disappears. An anonymous caller reports the murder. Gibbs and the gang find both the killer and the missing device.
A dumpster diver finds a severed leg, apparently from a Marine, believed to be attached to a live person not more than 24 hours earlier; however, the Marine in question, according to records, died two years previously. The NCIS solves it.
A Marine recruiter dies in his office from a single shot; Gibbs and the gang investigate; then a second one dies likewise. The Gibbs group expect another murder, so they set a trap, and it works; Tony and FBI agents capture the sniper.
A Navy dentist from a Naval air station dies of a single shot to his back, apparently in an execution-style murder; the NCIS investigates. Two more men from the same Naval air station soon die identically. Gibbs and company figure it out.
A Marine colonel disappears during an ambush in Iraq, as does $2M in cash; he re-enters the US under an assumed name; the FBI seeks him, and so does Gibbs, with whom he served while on active duty. Gibbs finds him and figures it out.
A foreign agent enters the autopsy room via an unconventional method; he then takes captive Ducky, Gerald, and, later, Kate. He demands evidence pertaining to a body in the room. He eventually asks to see Gibbs, who obliges him; he loses.
The body of a petty officer falls from a ceiling at a nightclub; Gibbs and company investigate; Ducky says that someone dressed the victim after he died. Gibbs finds $40K in cash; he finds the connection between a prank and an inheritance.
A prisoner, who was a SEAL and a petty officer, escapes from Fort Leavenworth while serving time for having killed his wife and a cable guy; the team, seeking to determine where he may go next, consider whether his conviction was wrong.
A guard finds the disemboweled body of an NCIS agent in an elevator; the gang investigate. Gibbs feels responsibility. The victim has pursued a cold case involving a theft of $12M+ from the Navy. NCIS finds the thief and the killer.
A Marine fails to report after a weekend; he's an EOD tech with a critical qualification, so the NCIS investigates. Three other EOD Marines have disappeared in the past eight years. Abby finds the dots, and the others connect them.
Teenagers at play find the body of a Marine impaled on a post; the team investigate. The victim was an armorer at Quantico. Gibbs and the gang solve both the murder and the theft of surplus weapons. An ATF agent takes an unusual part.
A SEAL lieutenant falls to his death, due to a failed fitting in his gear, while rappelling during an exercise; Gibbs and company investigate; the CIA expresses intense interest. Abby and McGee provide answers, and the team solve the case.
With extreme determination Gibbs continues, to the extent of obsession, to concentrate on the unknown terrorist who shot him and escaped. The bad guy reappears, but Kate and Tony disappear temporarily. Gibbs eventually meets his quarry.
A group kidnaps the wife and the young blind daughter of a Navy captain, who, on his computer, receives a demand for $2M. The officer's secretary secretly goes to the NCIS; the Gibbs team find the hostages, kidnapper, cash, and mastermind.
The body of a sailor is found in an underground chamber. She was dressed in a bridal gown, and chained. NCIS finds out there were other victims. Can they find the person responsible before the next one perishes?
A farmer on a tractor sees an unattended intact Marine helo inside a crop circle on his land. While Gibbs and company investigate, a burned-out cabin turns up, as does a charred body. Locals evade, but the team solve both mysteries.
A civilian dies on a Marine bombing range; while investigating, Gibbs finds a second body; other bodies also later appear. The NCIS and the FBI strangely work well together, and the NCIS team work well together, so they produce results.
In family housing at Quantico the wife of a deployed major shoots and critically injures an intruder who tries to rape her; Gibbs and the gang investigate. Abby and McGee help with computer-based sleuthing, and the team catch the perps.