A Marine’s murder has connections to a dirt bike gang that Torres joined while on an old undercover operation.

A gunnery sergeant’s murder in a national park lead the team to join forces with the mounted police. While investigating the clues, they uncover a disturbing smuggling ring.

The team suspects foul play when a healthy, young petty officer mysteriously dies in his sleep aboard a Navy destroyer. Wedding stress reaches its peak for McGee and his fiancée.

When a Navy SEAL vanishes during an unsanctioned trip, Gibbs, McGee and Torres travel to an unpopulated area in Paraguay that’s teeming with violent rebels.

A vice admiral tasks McGee with tracking down the hackers who infected his laptop with ransomware before the virus wipes out all his data. The cyberterrorism escalates when the virus…

NCIS uncovers a bomb plot and a long-running theft ring while investigating a death at a Quantico reunion. Also Torres and Quinn adjust to life on Gibbs’ team, including new…

After an architect duo who specializes in designing secure buildings is kidnapped, the NCIS team mounts a search to bring them home. Also, Deeks and Kensi realize they may need…

When Gibbs spots the brother of an “NCIS Most Wanted” suspect, he takes the opportunity to assume his former alias and go undercover with their infamous anti-government militia. This leaves…

DiNozzo returns to the military academy he attended as a teen after a murdered Marine, who was an alumnus of the school, is found clutching the photo of a current…

Erin Kendall (guest star Danica McKellar) claims to have seen a murder of a sailor in an apartment across from hers. Gibbs assigns the case to McGee who believes that…

Callen and the team discover that Anna is being held by a group with ties to Anna’s upbring and must rescue her before she is forcibly returned to Russia. Also,…

Sam goes undercover as a prisoner to track down a terrorist group responsible for several bombings around the world.

When a 14-year-old foils a home invasion, Gibbs suspects the teenager is withholding pertinent details. Also, Director Vance and Senior FBI Agent Fornell travel to London as part of the…