Mark Harmon to Play Gibbs in Full Season of ‘NCIS: Origins’ Season 3
9 reported
According to a report from Variety, Mark Harmon will portray Leroy Jethro Gibbs in every episode of the upcoming third season of the prequel series “NCIS: Origins.” CBS stated that Harmon’s season-long arc will involve a present-day mystery tied to Gibbs’ 1990s Camp Pendleton days. Harmon currently narrates each episode of the series and serves as an executive producer. He previously appeared as Gibbs in a 2025 crossover episode and in the prequel’s 2024 pilot, but has not played the character regularly since leaving the original “NCIS” in 2021. The third season of “NCIS: Origins” is set to air Tuesdays this fall on CBS.
What’s reported
Mark Harmon will play Leroy Jethro Gibbs in every episode of “NCIS: Origins” Season 3.
CBS described the arc as a “present-day mystery tied to his ‘90s Camp Pendleton days.”
Harmon narrates every episode of the series and is an executive producer.
He appeared as Gibbs in a 2025 crossover episode and the 2024 pilot.
Harmon left the original “NCIS” in Season 19 in 2021.
Austin Stowell stars as a young Gibbs in the prequel.
The cast also includes Kyle Schmid, Mariel Molino, Tyla Abercrumbie, Diany Rodriguez, and Caleb Foote.
Executive producers include Mark Harmon, Sean Harmon, David J. North, Michele Greco, and Eric Christian Olsen.
CBS Studios produces the series.
Key figures
Mark Harmon: Actor playing Leroy Jethro Gibbs, narrator, and executive producer
Sean Harmon: Executive producer
David J. North: Executive producer
Michele Greco: Executive producer
Eric Christian Olsen: Executive producer
Austin Stowell: Actor playing young Gibbs
Kyle Schmid: Cast member
Mariel Molino: Cast member
Tyla Abercrumbie: Cast member
Diany Rodriguez: Cast member
Caleb Foote: Cast member
Sources: Variety
