After the U.S. consulate in Tunisia is attacked, Callen and Sam go on a secret and perilous mission to retrieve key evidence from the crime scene. When they return, they seek help from the U.S. Ambassador, who narrowly escaped the attack, to provide missing information.moreless
Callen is taken hostage when terrorists take control of a building where he is working undercover to investigate an arms dealer. When the NCIS team arrive, they discover the entire building is wired with explosives.moreless
A burglary occurs at a cyber-security company, but Callen is forced to steer clear of the investigation when Hetty tells him that his girlfriend, Joelle, is one of the lead witnesses. Meanwhile, the team discuss their personal holiday travel plans.moreless
Sam reflects on his relationship with his father when the team investigate the murders of marines who have sons in military academies.
Hetty orders a lockdown and Eric becomes one of seven suspects after Granger is poisoned by the mole.
When a former Marine turned homeless is murdered, Kensi and Deeks go undercover for the investigation and find a link to the Mexican cartel.
A man is murdered by a small drone, and the investigation reveals he was connected to a terrorist group that is planning an attack on Long Beach. With time running out, Nell uses her drone expertise to try to prevent a disaster.moreless
Sam is arrested for murdering a woman, but Callen and Granger work to clear his name. Meanwhile, Kensi and Deeks discover a link between the victim and a student from Sam's past.
Team Scorpion must pass a mandated psych evaluation or face being disbanded after they are accused of destroying a priceless work of art. Meanwhile, Ralph is reluctant to go to his school's Halloween party, so Paige asks the team to step in and help.moreless
Callen and Sam travel to Mexico to track down the only employee who escaped a professional hit at the Department of Defense. Back in the States, the rest of the NCIS team work to uncover the motive behind the shooting.moreless
The team discover that one of their own is compromised when they investigate the murder of a Navy contractor who was involved in illegal transactions involving confidential data. Meanwhile, Hetty is placed under investigation in Washington, D.C., and representatives from the Department of Justice arrive in Los Angeles to investigate the team.moreless
Continuing from last season's finale, Season 6 opens with Callen and Sam trapped in a terrorist's armed submarine headed for an aircraft carrier in San Diego. Hetty ignores her orders to report to Washington as the team tries to locate and stop the armed submarine.moreless
Season 5 ends with the team learning that a cartel plans to transport billions of dollars worth of cocaine from Colombia to the U.S. using a submarine. Callen and Sam are assigned the task of locating the missing vessel. Meanwhile, Hetty is called to Washington in response to the mission in Afghanistan.moreless
A 10-year-old girl Sam once provided protection detail for in Saudi Arabia goes missing, and he's convinced her disappearance is directly connected to the theft of software for a new unmanned-aerial vehicle being developed by her engineer father.moreless
An undercover NCIS agent is taken into custody when he is suspected of working for the smuggler he is supposed to be investigating. Meanwhile, Kensi and Deeks discuss their relationship when Kensi returns to the field.moreless
When Nell joins Deeks in the field to investigate a former marine being tracked by Al Qadea for embezzling Iraqi money, Eric is assigned a new Ops partner.
Hetty decides to send the NCIS team to Afghanistan after she learns Kensi is missing and the Taliban may have her.
While online during game play, Eric overhears his computer systems expert friend being attacked. Now it's up to NCIS to figure out if the computer system that manages the Russian missiles is at risk. A familiar face from Kensi's past shows up in Afghanistan.moreless
When a local gang records the execution of an ATF agent, the team is tasked with determining how his cover was blown. Kensi goes missing in Afghanistan which makes Granger worry about her safety.moreless
The NCIS team needs to determine if an explosion at a fish market is terrorism or a failed drug smuggling deal. Granger and Kensi continue their search for the notorious white ghost with an investigation into a helicopter crash.moreless
Callen and Sam's new murder suspect is a retired assassin they came across on their first case together. As the two head to Mexico to find him, Deeks and Nate help out the investigation in Los Angeles.moreless
A suspect in NCIS' murder investigation of two former military contractors puts one of the team in serious peril. Callen gets set up on a blind date.
Kensi and Granger reunite with the rest of the Los Angeles NCIS team when the murder of a federal agent in Los Angeles might be tied to a possible terrorist attack.
NCIS delves into the reasons behind an attack on a senator's daughter. Deeks partners up with Nell to back up Sam and Callen in their effort provide security for the daughter. One of Kensi's co-workers gives her the ideal holiday gift.moreless