Callen and Sam are confined within a heavily armed submarine, the target of terrorists who plan to use it to strike an aircraft carrier off the coast of San Diego. Hetty, defying protocol, cancels her scheduled trip to Washington and direct…

While investigating the murder of a Navy contractor implicated in illicit data dealings, the NCIS: LA team uncovers a disturbing truth: one of their own has been compromised.

A member of their team has become the focus of the Department of Justice. Leon delivers troubling news to Hetty.

A shadow from their history descends, and the team discovers that someone known to them is now the focus of a deliberate attack. Meanwhile, Nate strives to offer solace and support as Nell navigates a deeply painful ordeal.

Callen and Sam travel to Mexico, their destination the sole survivor of an assassination attempt that targeted a Department of Defense employee. Meanwhile, back in the United States, the remaining team members endeavor to uncover the reason…

Sam found himself arrested, charged with the murder of a woman. Callen and Granger then set about the difficult task of proving his innocence.

The death of a man, caused by a remotely piloted aircraft no larger than a hand, immediately cast suspicion upon a terrorist organization. Meanwhile, at Long Beach, Nell struggles to avert a looming catastrophe.

While operating undercover to investigate the death of a homeless man, Deeks and Kensi uncover a link to a Mexican cartel.

Following Granger's poisoning by the mole, Eric finds himself among a list of seven individuals considered suspects.

The team found themselves drawn into an investigation concerning the deaths of Marines, each with sons enrolled in prestigious military academies.

The team investigates a break-in at a cybersecurity firm, but Callen must maintain a distance. Hetty informs him that his girlfriend, Joelle, is a key witness to the incident.

The team began to investigate an arms dealer when their efforts were abruptly derailed. A terrorist attack had overrun the suspect’s building, throwing their investigation into immediate chaos.

Following a terrorist attack that leaves a U.S. Ambassador alive, Sam and Callen must secure crucial evidence.

To find the individual behind an anthrax poisoning, Sam and Callen assume the identities of food truck proprietors, working undercover.

During the investigation spurred by an anonymous tip concerning a missing NSA agent, Callen and Sam themselves become targets, taken from their surroundings.

Following Sam's injury, inflicted by a CIA-contracted operative, the team finds themselves in need of assistance from a Nepali soldier.

The team investigated the death of an Afghan soldier who had been training in the United States.

The operation concluded with success, but the victory was short-lived. A subsequent explosion claimed the lives of three FBI agents.

When a missile test is sabotaged, diverted from its intended course, the team begins a search for the hacking group responsible. They enlist the help of a young computer specialist, brought in by Hetty to aid their investigation. Meanwhile,…

Undercover once more, Callen and Sam assume the roles of prisoner and guard, respectively, to penetrate a white supremacist organization suspected of harboring stolen nuclear materials. Meanwhile, Kensi adopts the persona of a tattooed bike…

A disquiet settles over Callen and Sam when an acquaintance from their past appears, seemingly recovered from a recent murder, and implores them for assistance. As the team delves into the matter, they begin to suspect a potential violation…

Upon discovering his ties to an extremist organization, the team sets out to locate a highly skilled marksman. They seek an expert sniper, one whose abilities might prove crucial to their objective.

Unexpectedly, several individuals previously presumed lost have emerged from the vessel that vanished during Arkady's dealings with Russia.

To pinpoint their targets, portions of the team must adopt assumed identities within Moscow's shadows.