If Mark Harmon’s Gibbs makes a comeback on NCIS, here’s the possible scenario. Harmon’s been part of NCIS since its spinoff from JAG in 2003, portraying the steadfast leader, Leroy Jethro Gibbs. He’s been central to the show’s most gripping plots. Fans were shocked when Gibbs left in Season 19 to find solace in Alaska after enduring personal tragedies. Though NCIS has hinted at Gibbs’ presence post-departure, his return remains uncertain. Harmon’s role as an executive producer underscores his importance to the show. As NCIS shifts focus to new leader Alden Parker, Gibbs’ absence is keenly felt by both characters and fans.