5USA+1

The investigation into a marine's death throws up the possibility of links between the military and local gangs.

The murder of a marine triggers an investigation in which Sam has to go undercover as a fighter at a mixed martial arts gym.

The murder of a naval officer entangled in the world of Hollywood prompts Hetty to request that an LAPD officer helps the investigation.

A video link provides the team with a much-needed lead in their investigation of Dom's kidnapping.

When the covert transfer of a terrorist in army custody is compromised, the team must locate the suspect before he flees the country.

Callen's cover is blown and he's forced to sever his ties with NCIS in order to protect the team's safety.

Dylan and Lizzie go undercover in New York's erotic underworld when they investigate the murder of a high-powered public relations rep.

The squad comes together for Detective Stabler to find the suspect behind a threat to his family.