Entertainment TV Scripted TV Shows Mark Harmon Wanted to 'Keep It Fresh' Before 'NCIS' Departure — but Teases Gibbs Is 'Not Retired' The actor starred as Special Agent Leroy Jethro Gibbs for 19 seasons before leaving the CBS procedural last fall By Stephanie Wenger Stephanie Wenger Stephanie Wenger is a TV Writer/Reporter at PEOPLE. She joined the brand in 2021 as a digital news writer, covering stories spanning across the site's verticals. She previously contributed E! Online, Hollywood Life and Oscar.com. People Editorial Guidelines Published on August 11, 2022 03:25PM EDT Photo: Paul Archuleta/FilmMagic Mark Harmon is addressing his exit from NCIS last fall after starring on the CBS series for 19 seasons. The 70-year-old actor said goodbye to the procedural in the fourth episode of season 19 when his character Special Agent Leroy Jethro Gibbs decided to stay in Alaska indefinitely after solving a case. "What has always drawn me here is the character I play and to keep it fresh and to keep it challenging," Harmon said in a special featurette on the show's season 19 DVD release, per Entertainment Tonight. "Plot-wise, this character has taken the path that it did. I thought it was honest and OK with." Mark Harmon Departs NCIS After 18 Seasons: He's 'Always Going to Be a Part of the Show' Harmon — who starred on the series since its premiere in 2003 — also shared that he believed that his beloved character is "not retired," adding, "The character is living in Alaska as far as I know." In Harmon's final NCIS episode, his character said he did not plan to return home from Alaska. "I'm not going back, Tim," he told Special Agent Timothy McGee (Sean Murray) while fishing. "I'm not going back home." Monty Brinton/CBS via Getty NCIS Star Mark Harmon Reveals the Secret to His Long-Lasting Success: 'You Earn Luck' Gibbs then tells McGee that he "could not have hoped for anyone better" to work with over the past 18 years before the partners hugged, closing out the scene. Following the episode, executive producer Steve Binder opened up about Harmon's exit for the long-running series. "As an executive producer and dear friend, Mark continues to be an integral part of the fabric of the show. Our north star has always been staying true to our characters, and that truth has always guided the stories we tell and where those characters go," he told PEOPLE in a statement. "So regarding the future of Gibbs, as long-time fans of the show may have noticed over the years…never count Leroy Jethro Gibbs out." "Mark's always been part of the show, Mark's always going to be part of the show," CBS Entertainment President Kelly Kahl told Deadline in September 2021. "In terms of his on-air appearances, we're just going to have to see how it plays out going forward." Never miss a story — sign up for PEOPLE's free weekly newsletter to get the biggest news of the week delivered to your inbox every Friday. NCIS: The Nineteenth Season is out on DVD on Tuesday. NCIS will return to CBS for its 20th season on Sept. 19.