The Naval Criminal Investigation Service's Office of Special Projects takes on the undercover work and the hard to crack cases in LA. Key agents are G. Callen and Sam Hanna, streets kids risen through the ranks.
Chris O'Donnell / Daniela Ruah / Barrett Foa / Linda Hunt / LL Cool J / Eric Christian Olsen / Renée Felice Smith / Miguel Ferrer
The NCIS team works with the Global Criminal Tribunal when a Syrian seeking justice, David Sarraf, is brutally attacked while delivering evidence that would prove chemical weapons were used on civilians. Also, Kensi stays at the crime scene and comforts S
After the chief of logistics for a naval weapons station collapses on the job, the NCIS team must determine if this is a terror threat or a stress-induced breakdown. Also, Kensi and Deeks research different honeymoon locations
The NCIS team is joined by NCIS Special Agent Nicole DeChamps after a Marine reservist with a history of PTSD disappears following a drunk and disorderly altercation.
An elaborate bank heist to steal a single safe deposit box held by Veronica Stephens, a Navy contractor, leads NCIS to investigate her corrupt consulting firm.
The NCIS team investigates the home invasion of Navy Captain Dean Hadlow, who was entertaining his friend, General Omer Abidi of Pakistan, when robbers successfully stole money, jewelry and highly classified information. Also, Deeks and Kensi interview ca
Deputy Director Ochoa volunteers the NCIS team to assist with a covert operation tied to a terrorist group advocating for extreme military force. Also, Callen has concerns as to what an assignment of this nature could mean for the future of the team.
The NCIS team partners with the State Department after the murder of an arms dealer is connected to a series of crimes seemingly executed by someone with elite special forces training. Also, Callen visits ATF Agent Anna Kolchec in prison as she awaits her
The NCIS team attempts to locate Mosley after she murders a cartel hitman and goes off the grid.
While assisting NCIS with an undercover operation, informant Elizabeth Williams is arrested and the team is unable to provide her with an alibi. Also, Callen meets with ATF Agent Anna Kolcheck who remains on suspension following her last joint case with N
The NCIS team is in danger after their pictures, as well as Mosley and her son's names, are included on a cartel hit list. Also, NCIS Deputy Director Louis Ochoa arrives with Special Prosecutor John Rogers to interview Mosley about the off-the-books missi
Callen and Sam are assigned protection duty for Deputy Crown Prince Kamal after an unknown assassin targets his decoy upon his arrival in Los Angeles.
After the prototype for a tactical assault suit is stolen from a Navy base and used in a Beverly Hills jewelry heist, the team must determine who stole the suit and what their next target is. Also, retired Navy Admiral Hollace Kilbride temporarily oversee
Gravely injured and unable to communicate with the team in the U.S., Callen, Sam and Kensi, with an unconscious Deeks in tow, search for a safe way home as a cartel boss places a "dead or alive" bounty on their heads. Also, Mosley and retired Navy Admiral
Sam and Hidoko go undercover when a cryptocurrency farm is robbed of over $10 million in Bitcoin codes.
The team investigates a missing person's case and uncovers a killer who puts on shows for high-paying voyeurs.
Callen's father is apprehended as part of an exchange for two American photographers being held hostage in Iran.
Callen and Sam pull Jennifer Kim from witness protection to help the team find an underground spy with an arsenal of bomb materials.
The NCIS team joins Hetty's old friends from the Vietnam War in an off-the-books rescue mission to save her from her captors.
When napalm is discovered at a crime scene, the team investigates the only casualty for possible links to terrorism.
The team investigates a ransom-ware attack that's taken out the whole power grid for Western Los Angeles.
Callen and the team question Joelle's backstory after she escapes from a kidnapping and turns to Callen for help.
The team must find assailants who illegally crossed the border and attacked California Highway Patrol officers; Homeland Security sends Nell's older and bossy sister to assist with the case.
Kensi is transported to a missile launch facility to help thwart a takeover of nuclear weapons.
Sam Hanna goes rogue from the NCIS team in an attempt to stop Tahir Khaled from ever targeting his family again.
The team works with Hetty's old Vietnam War colleagues on a gold heist investigation.
Hetty's old colleagues from the Vietnam War partner with the team when a Navy Captain kidnaps a corrupt Veterans Affairs administrator.
Sam and Callen board a flight to Tokyo posing as businessmen to trail an engineer trying to sell schematics for a missile destroyer.
Nell and Eric go undercover at a couple's retreat when the Treasury Department is hacked and the crime is linked to a tech-savvy husband and wife.
Sam assumes a former alias in a risky undercover operation to take down an elusive drug lord. Also, Hetty interrupts Callen and Anna's romantic night to assign them a prisoner escort mission.
One agent is held in an unknown location and being tortured by the mole, while another is betrayed by someone unexpected.
Hetty goes rogue and an agent is kidnapped by the mole.
The mole has once again compromised the NCIS team as planted evidence results in the arrests of Callen, Sam, Granger and Deeks, on the day Under Secretary Duggan returns for Hetty's resignation.
After a Navy reservist is killed while protecting a city councilman, Sam is sent undercover in a private security firm with links to several criminal organizations. Also, Callen and Anna discuss the next steps in their relationship.
The team celebrates the holidays as they investigate the disappearance of a Navy Lieutenant Commander who's working with the NSA on foreign cyber threats.
The team gets a new lead in the ongoing mole investigation when two men disguised as Sheriff's deputies are killed in front of Callen's home. Meanwhile, Nell visits a prison inmate who's withholding information about the department leak.
Callen is forced to interrogate his father when he's found in an NCIS patient's hospital during a radiation poisoning case. In the meantime, the team discusses their plans for Thanksgiving.
When a graduate student developing an electromagnetic weapon for the Navy is attacked, the team uncovers a link to international warfare.
Callen goes undercover as a patient in a mental hospital to find an NSA agent who vanished while pursuing an ISIS attempting to cross the border.
After a maintenance man saves a lieutenant commander's life, the team discovers his dark past that places a local teenager in peril. In the meantime, Sam must decide who to take to the football game.
The murder of a navy machinist with high security clearance sends the team on a city-wide hunt tracking evidence. Also, Anna Kolcheck partners with Callen, and Sam assists Hetty in the on-going mole investigation.
After a Homeland Security agent is poisoned by a notorious Triad assassin, NCIS uncovers a warehouse of counterfeit purses and a money trail to stolen government funds. Also, Nell joins the team in the field.
The NCIS LA team investigates an abduction case while down two members, with Hetty being held in D.C. for questioning, and another still in the ICU following the mission in Syria.
Under Secretary of Defense Corbin Duggan takes over the NCIS Los Angeles unit when they fail to find a mole.