Eric Christian Olsen

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.

As the NCIS team looks into a missing person's case, they discover that the woman is an undercover agent from Hetty's past.

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 NCIS team in Los Angeles continues to work with the mobile Red team to find the terrorist before he disappears.

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.

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 goes undercover in order to investigate a crime connected to a cartel suspected for terrorist interactions.

Callen goes undercover in order to penetrate a Chechen terrorist group that recruits foreigners and plans their next attack in the United States.

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 retired CIA agent is murdered, the team must question Hetty regarding her relationship with the man.

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.

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.

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.

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.

Callen has been placed on suspension and with Hetty's retirement, the team is having difficulty adjusting to their new roles.

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.

Kensi and Deeks go house sitting in the suburbs to flush out a Russian sleeper cell.

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.

Nate Getz asks the NCIS team for help when the FBI looks at an ex-Marine alleged to have made a chemical bomb.