Overview
- CBS confirmed Tuesday, June 30, 2026, that Mark Harmon will appear onscreen as the present-day Leroy Jethro Gibbs in every episode of NCIS: Origins Season 3.
- Season 3 is a 10-episode serialized arc airing Tuesdays at 10/9c on CBS with episodes streaming on Paramount+ the next day.
- The season will weave a single, season-long present-day mystery directly connected to Gibbs’s early career at Camp Pendleton and will resolve threads left by Season 2.
- Eric Christian Olsen joins the show’s executive-producer team under his Cloud Nine Productions alongside showrunner David J. North, Mark and Sean Harmon, and Michele Greco.
- The decision brings the franchise’s signature lead back into a central role, shifts Origins toward serialized storytelling for the fall event, and is likely intended to boost viewer interest across the NCIS lineup.