Summary
- NCIS: Origins delves into the backstory of young Gibbs, narrated by Mark Harmon, linking it to the original series.
- The prequel provides concrete details about Gibbs’ past, with 18 episodes in season 1 and renewal for season 2.
- Harmon’s involvement in NCIS: Origins showcases his executive producer role and his deep exploration of the character.
Season 1 of NCIS: Origins takes place in 1991 and follows the story of the young Leroy Gibbs as he starts working at the NIS office at Camp Pendleton. This engaging series, which debuted in October 2024, gives fans a fascinating look into the history of their beloved character. Delving into a character’s past is always intriguing, and with someone as intelligent and occasionally enigmatic as Gibbs, it’s even more captivating.
Mark Harmon departed from NCIS in its 19th season, having played the special agent since 2003. Although NCIS Season 22 is currently airing, filled with tales for the remaining characters, there’s no denying that Harmon’s absence is felt. Given how central Gibbs was to the storyline, it’s not surprising that a prequel series, NCIS: Origins, was developed. However, it’s unclear whether Harmon is part of NCIS: Origins or if he has stepped away from the entire franchise.
Is Mark Harmon On The NCIS Prequel NCIS: Origins?

Mark Harmon serves as the storyteller for NCIS: Origins, making a smooth transition from the initial series to the eagerly awaited spin-off.
In NCIS: Origins season 1, episode 1 titled “Enter Sandman,” Harmon reprised his role as Gibbs. The storyline shows him sitting by the fire and jotting down thoughts, reflecting on his past adventures. This fits well since it refers back to Gibbs’s last appearance in NCIS during season 19, episode 4 entitled “The Great Wide Open.
In a 2024 interview with Deadline, the creators of “NCIS: Origins”, David J. North and Gina Lucita Monreal, discussed Harmon’s character and its link to previous events. Monreal explained:
“Well, we knew that he brought a journal to Alaska.”
North pointed out that since Gibbs chose to remain in Alaska, it’s logical that he would keep his diary there.
We weren’t quite sure about the items Gibbs would bring along, knowing he wouldn’t return. Among them was a journal, as he’d be alone. That decision turned out to benefit us greatly here at Origins.
While it’s undeniable that fans adore Harmon as the special agent in NCIS, it’s clear that he couldn’t have convincingly played a younger version of Gibbs without some form of de-aging, which might not have been ideal for the prequel series. Instead, Austin Stowell steps up to breathe life into a character we already know well, and does an impressive job of it.
Even though characters like Abby Sciuto (played by Pauley Perrette) are no longer part of the show, it’s reassuring to see that Gibbs continues his story.
Instead of just seeing the older Gibbs tackle cases and support his team through life’s highs and lows over nearly 19 seasons on NCIS, shows like The Rookie offer a similar experience but with NCIS: Origins delving deeper into the specifics of young Gibbs’ past. While the original series does touch upon his background through flashbacks, this prequel provides a more in-depth exploration.
NCIS: Origins – The First Season Consists of 18 Episodes. Back in February 2025, TV Line disclosed that CBS had renewed the prequel series for a second season. At present, it remains undecided whether Harmon will provide narration for the upcoming season or make another appearance.
What Did Mark Harmon Say About NCIS: Origins?

Mark Harmon has discussed his departure from the crime drama series NCIS at length, and given his extensive involvement with NCIS: Origins, he has additionally shared insights about the process of working on the prequel. During an interview with The Hollywood Reporter in November 2024, he described it as a “period piece” and found it intriguing to “delve into the agency’s history in a manner unlike any previous experience.” Harmon also touched upon:
“looking at it in a different way, too, as an executive producer.”
After departing from NCIS, Harmon penned down two books titled “Ghosts of Honolulu” and “Ghosts of Panama”. Excited fans can look forward to seeing Harmon reprise his character as Tess Coleman’s (Jamie Lee Curtis) husband Ryan in the upcoming Disney sequel, “Freakier Friday”.
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2025-04-14 23:54