Mark Harmon and NCIS: Origins fans have reason to celebrate as the veteran actor, 74, returns to Camp Pendleton. Harmon will guest star in the first-ever crossover between NCIS and NCIS: Origins on November 11. Having portrayed Leroy Jethro Gibbs for 18 seasons on NCIS before his 2021 exit, this marks Harmon’s first on-camera appearance in the prequel series since his 2024 cameo. Fans have eagerly anticipated his return, and the crossover promises to bridge decades of storytelling in the franchise.

According to People, Harmon has remained involved with the NCIS universe, serving as an executive producer and the narrator for each episode of NCIS: Origins. His continued presence behind the scenes ensures consistency for longtime viewers.

Mark Harmon NCIS Origins Crossover Details

The cros

See Full Page