Watch NCIS Season 18 Online
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On NCIS Season 18 Episode 16, Gibbs and Marcie realize that the killer they've been tracking may be onto them while Bishop is implicated in an NSA leak.
On NCIS Season 18 Episode 15, when members of an NCIS REACT team are killed during an explosion, the lone surviving member helps crack the case using high-tech body armor.
On NCIS Season 18, Episode 14, the NCIS team tracks a stolen laptop to the uncle of a young boy, Phineas, who happens to be Gibbs' former neighbor.
On NCIS Season 18 Episode 13, the team investigates a biker killed in a hit and run, and Gibbs testifies against a financial advisor who stole from his Navy clients.
On NCIS Season 18 Episode 12, evidence from the stabbing of a Marine Sergeant leads Torres to meet his father, Miguel, who left when he was a child.
On NCIS Season 18 Episode 11, Vance assigns the team to COVID compliance duty at a foreign affairs summit, where there's a link to another team's case.
On NCIS Season 18 Episode 10, the NCIS team uncovers a secret dogfighting ring and events lead to an unexpected move by one of the team members.
On NCIS Season 18 Episode 9, the team dives into the competitive world of food trucks after finding a man frozen to death in the back of one.
On NCIS Season 18 Episode 8, Sloane's name is found in Afghanistan at an abandoned bus with a dead driver, and may be connected to a group of girls who were kidnapped.
On NCIS Season 18 Episode 7, the team investigates the murder of a Navy officer killed while driving home a released inmate and Gibbs helps Palmer deal with a trauma.
On NCIS Season 18 Episode 6, Bishop and Torres engage in a shootout in a former sheriff's residence, only to find themselves locked in abandoned jail cells there.
On NCIS Season 18 Episode 5, Gibbs and Fornell's crusade to find the head of the drug ring responsible for Fornell's daughter Emily's overdose comes to a climax.
On NCIS Season 18 Episode 4, McGee and Delilah's Bahamian vacation turns into a high-stakes mission when the case NCIS is tracking has ties to the island.
On NCIS Season 18 Episode 3, the discovery of two dead bodies in a forest leads the NCIS team into the wild world of modern-day treasure hunting.
On NCIS Season 18 Episode 2, flashbacks reveal the murder case that introduced young Gibbs to a young, new-to-America Ducky, on the 400th episode.
On NCIS Season 18 Episode 1, Gibbs and Fornell hunt down the leader of a drug ring who supplied drugs to Fornell's daughter, and a body goes missing from autopsy.