As the search for stolen nuclear weapons is revived, Hetty sends Callen and Kensi overseas while Deeks helps stateside as Sam and Michelle go undercover.
An international killer who can take on the façade of any personality he needs has been able to evade law enforcement across the world, even Callen. With Assistant Director Granger breathing down their necks, the NCIS team must track this killer down.
The team runs into problems while attempting to clear Kensi Blye from charges of murder after she has a deadly confrontation with CIA agents.
The arrest of Kensi for the murder of her father's former associate leaves the NCIS team astounded and scrambling to prove her innocence.
With national security threatened, the team must determine what went missing when a diplomatic service van was hijacked. After five years as partners, Callen and Sam are about to confront their biggest challenge.
The holidays lead to distractions for the team as Sam tries to get the perfect gift for his daughter and Eric is all set to meet Nell's parents. Only the team is assigned to find a stolen device that could cause destruction throughout the city.
NCIS needs to find who's responsible for ambushing the vehicle transporting Jada Khaled so their case can be salvaged. This means Sam will have to face up to Jada for the first time since bringing her back from Sudan.
An international conference at the Vietnamese Consulate could be threatened when a shooting takes place nearby. The team is assigned to assess whether or not the shooting is a terrorist attack before the Secretary of Navy arrives.
Kensi faces her feelings when Deeks is fired from NCIS and sent back to the LAPD.
Callen and the rest of the NCIS team refuse to accept Hetty's sudden resignation without an explanation. They start their own investigation to find out why she's disappeared, hoping they can track her down.
A smuggling case takes the NCIS team to Mexico to investigate and find missing hazardous materials.
To help the team find a murderer, Nell puts her smarts to work when she goes undercover to replace a murdered DOD researcher. The new NCIS Assistant Director questions Hetty's leadership abilities.
When a retired CIA agent is murdered, the team must question Hetty regarding her relationship with the man.
Kensi and Deeks go house sitting in the suburbs to flush out a Russian sleeper cell.
Before a group of Navy SEALs can embark on a hostage rescue mission, Sam Hanna is forced to interrogate the group to determine who killed a Navy intelligence officer.
As their investigation continues, evidence turns up that links the death to a group of Russian agents. Sam's deepest secret is at risk of coming out.
Callen has been placed on suspension and with Hetty's retirement, the team is having difficulty adjusting to their new roles.
As the team continues their search for Hetty in Romania, Callen finds answers to the secrets of his past.
When a Marine base's secure facility is breached, the team must determine what it was that was targeted for theft. In order to accomplish their mission, Kensi must go undercover.
A joint CIA-NCIS operation gone wrong leaves an undercover Sam missing in Sudan, forcing Callen and the rest of the team to look for him before all is lost.
A joint operation between NCIS and LAPD is necessary when a known terrorist is linked to a local drug cartel. Sam is distracted when an important item comes up missing.
When a Marine that was dishonorably discharged is accused of murder and claims he was framed, it is up to NCIS to figure out the truth.
The NCIS team becomes involved in the Libyan conflict when a news reporter is murdered. Callen learns something about his past from Hetty and it could affect their relationship.
When a crime is posted on the internet, the NCIS team heads to the beach to investigate any links a surfer and a dead Naval tech scientist might have to the video.
The joint NCIS: Los Angeles and Hawaii Five-0 task force head back to the mainland as they follow the suspect who's threatening to release a deadly virus.
When four people are killed in an explosion at a diner, NCIS is brought into to investigate as they were linked to a classified project. Kensi finds herself sympathizing with a teenager that is related to the investigation.
After recieving a cryptic voice mail from a former CIA colleague, Sam Hanna is taken to a warehouse where he encounters a dead body, a large white poodle, layers of paper work and books, and a mystery that takes the OPS team down a rabbit hole of dog shows and covert spies.
morelessAs the NCIS team looks into a missing person's case, they discover that the woman is an undercover agent from Hetty's past.
When a serial killer strikes in Los Angeles, it grabs the attention of Abby Sciuto. She travels from Washington DC to give the team a hand, since she has been following this killer for some time.
After a former Navy intelligence officer is murdered, Hetty contacts a former coworker when the NCIS team uncovers a threat to national security.
The NCIS team looks into a gold heist that may be linked to terrorism. Kensi is forced to partner with Granger while Deeks testifies in court.
When a murder weapon in Idaho matches a case in Los Angeles, Callen and Sam head to Idaho to join NCIS: Red, a mobile team who travel to various locations to solve crimes.
The NCIS team investigates an international car shipping ring when a woman from Deek's past is found to be involved. Kensi goes undercover at an auto body shop as part of the investigation.
Following a drone strike in Afghanistan and the finding of a retired marine's body in the ruins of the bomb-making compound, the team investigates the man's loyalties and connections to the Taliban.
To return a favor, Sam goes all out to help an Afghani elder, who helped him when he was wounded, look for his missing nephew.
It's an issue of national security as the NCIS team investigates whether the death of a U.S. senatorial candidate's staffer was an accident or a murder.
Callen goes undercover in order to penetrate a Chechen terrorist group that recruits foreigners and plans their next attack in the United States.
The team investigates the only survivor of a former terrorist group. Kensi and Deeks follow a trail that leads them to the woods.
The team is spread out for the holidays with Callen, Sam, Kensi and Deeks at sea looking into the death of an NCIS agent. While Hetty decides to take a trip, Eric and Nell keep thingsgoing back at headquarters.
A car explosion sends the team on a mission throughout the city to find the other stolen explosives before they can be detonated. Amidst great protest, Hunter rearranges the team partnerships.
Motivated by revenge, the Chameleon once again challenges the NCIS team after an undercover assignment sets in motion a deadly mind game devised by the criminal mastermind.
After a Navy lieutenant and pilot are poisoned by cyanide laced water, the NCIS team investigates to see if the two were targeted or if it was a trial run for a large-scale contamination.
The missing body of a cartel boss sends Kensi and Deeks to Mexico while the rest of the NCIS team looks for a potential leak within the DEA's special task force.
The team goes undercover in order to investigate a crime connected to a cartel suspected for terrorist interactions.
NCIS must determine if a Venezuelan politician is in imminent danger of being assassinated. It all hinges on a Navy Intelligence Commander who has gone missing.
The NCIS team in Los Angeles continues to work with the mobile Red team to find the terrorist before he disappears.
Eric's going undercover for the first time to make sure that classified technology remains secure after a rocket engine expert ends up dead in a test chamber.
Looking for information on a notorious arms dealer, Deeks goes undercover and makes friends with a female source. While keeping surveillance on Deeks and the woman, Kensi is challenged by new emotions.
After a cyber attack on the DOD, NCIS and the NSA team up to locate the person responsible. Callen continues to look for information regarding his past.
A Marine's death raises suspicions from his wife about his last battle. Sam and Callen try to find out whether there has been a cover up. When Hetty invites Operational Psychologist Nate Getz, the team suspects an evaluation is coming up.
Nate Getz asks the NCIS team for help when the FBI looks at an ex-Marine alleged to have made a chemical bomb.
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