"NCIS" legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series "NCIS: Origins," and he's not coming alone. Harmon, 74, will make a rare guest appearance on "Origins" ...

Daddy's home! Mark Harmon, who played Leroy Jethro Gibbs for 19 seasons on "NCIS," will reprise his role in an upcoming Season 2 episode of CBS' prequel series "NCIS: Origins," TVLine has learned.

The following contains spoilers for NCIS Season 23, Episode 4, “Gone Girls,” which aired on Tuesday, November 4, on CBS. Created over Mark Harmon’s nearly two decades on NCIS and continued by Austin ...

“NCIS” legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series “NCIS: Origins,” and he’s not coming alone. Harmon, 74, will make a rare guest appearance on “Origins” ...

The following contains spoilers for NCIS: Origins Season 3, Episode 3, “The Edge,” which aired Tuesday, October 28, on CBS. With the disappointing developments for Gibbs (Austin Stowell) and Lala’s ...

Marisa is a Senior News Author for Collider. She graduated from Western Kentucky University in 2018 after majoring in Creative Writing with a minor in Folk Studies. She grew up in Kentucky and ...

Fans know Gibbs has a rule for everything. And so it’s only fitting that in this NCIS and NCIS: Origins crossover, we’ll see young Leroy Jethro Gibbs (Austin Stowell) learning one. “You often hear ...

Ahead of the "NCIS" and "NCIS: Origins" crossover event on Nov. 11, 2025, fans had one question in mind: Would Mark Harmon's Gibbs share a scene with present-day Lala? Heading into the episode, all we ...