Season 15 Premieres
Available Online: Trailers and Extras
Watch NCIS Season 15 episodes online free for 7 days after the original broadcast without sign in. Sign in to catch up on more available episodes.
NCIS | Season 15
NCIS Special Agent Leroy Jethro Gibbs, a former Marine gunnery sergeant whose skills as an investigator are unmatched, leads this troupe of colorful personalities. Season 13 ended with NCIS, the FBI and MI6 in an international manhunt for an escaped British spy. Season 14 promises more crime-solving adventures. And don't forget to catch former NCIS star Michael Weatherly on the new Global series, Bull, following NCIS' new season!