‘NCIS’ Stars Who Left the Series: Where Are They Now?

Mark Harmon starred on the CBS series as Leroy Jethro Gibbs for 18 seasons until October 2021. After exiting the show, the network announced the prequel NCIS: Origins, which follows the life of a young Gibbs. While Harmon is not playing Gibbs, he narrates the series, which premiered in 2024, and serves as an executive producer.

NCIS has been on the air since 2003 — and the fan favorite drama is still going strong. The CBS series follows a group of special agents from the Naval Criminal Investigative Service as they investigate various different crimes. NCIS season 1 began with lead actors Mark Harmon, Sasha Alexander, Michael Weatherly, Pauley Perrette and the late David McCallum, however, the cast has consistently changed over the 20-plus seasons as actors have come and gone. Harmon – who played Leroy Jethro Gibbs – left NCIS after 18 seasons in October 2021. Five seasons later, Rocky Carroll, who played Gibbs’ boss Leon Vance, exited the show in March 2026. Scroll down to see what the former NCIS stars are doing now: