Mark Harmon last appeared as the character in a November 2025 episode of the prequel series ...

Mark Harmon is coming back as Gibbs through all of Season 3 of "NCIS: Origins." How will that work? "You'll see," Harmon says ...

CBS's "NCIS" Tuesday night is back tonight, kicking things off with NCIS S23E11: "Army of One," with Knight (Katrina Law) looking to talk down a man who barricaded himself inside an ammo warehouse – ...

Mark Harmon will make a full-time return to the 'NCIS'-verse, reprising his role as Leroy Jethro Gibbs in the 2026-27 season.