Mark Harmon Returns as Gibbs in NCIS: Origins Season 3
CBS has confirmed that Mark Harmon is returning to the NCIS franchise as Leroy Jethro Gibbs for a full season arc in NCIS: Origins Season 3, completing one of the network's most clever bait-and-switch maneuvers in recent memory. The announcement gives fans their most substantial screen time with Harmon in five years, while the flagship series prepares for its own major comeback with Michael Weatherly returning as Tony DiNozzo.
What did CBS announce about Mark Harmon's return?
CBS revealed that Harmon will appear in all 10 episodes of NCIS: Origins Season 3, reprising his role as the older Gibbs. His present-day story will tie into a mystery from his past, bridging the franchise's timelines when the prequel returns this fall.
Harmon originally led the NCIS cast when the series premiered in 2003. He departed the flagship show in Season 19, when Gibbs decided to stay in Alaska after a case brought him to Naktok Bay. After saying goodbye to Timothy McGee, played by Sean Murray, Gibbs has made only sporadic appearances in the franchise since.
How did NCIS set up Gibbs' comeback?
The NCIS franchise quietly laid the groundwork for Gibbs' return during NCIS Season 23. Gibbs visited Washington to help Alden Parker, played by Gary Cole, take down Army CID Director Wayne Rogers, played by J. Paul Boehmer, who was responsible for Director Leon Vance's death.
The episode never explicitly confirmed that Parker and Gibbs orchestrated Rogers' execution, but the evidence was hard to miss. Parker's sister Harriet, played by Nancy Travis, recalled that Rogers was shot by a sniper from over 1,500 yards away after the alternator stalled on his transport vehicle.
Longtime fans know that Gibbs, a trained Marine scout sniper, shot Pedro Hernandez at the exact same distance. That kill avenged the murder of Gibbs' wife and daughter, making it a defining moment in the character's backstory. NCIS also established that Parker is an expert car thief, implying both men used their signature skills to bring Rogers to justice.
If there was any remaining doubt, Parker cooking fresh Alaskan salmon for Harriet at the end of the episode put it to rest.
Why is Gibbs returning to the prequel instead of the flagship?
Despite the flagship series heavily implying that Gibbs was back in Washington, CBS executed a classic bait-and-switch. Instead of bringing Harmon back to the original NCIS, the network directed his return to the prequel series.
NCIS: Origins launched in 2024 with Austin Stowell playing a younger Gibbs in the 1990s. Harmon serves as executive producer and narrator for the prequel, which picks up where his Alaska story leaves off. The show depicts the retired Special Agent-in-Charge living a solitary life, writing about his experiences and reflecting on his past career.
Harmon's second appearance since leaving NCIS came during NCIS: Origins Season 2, in a Veterans Day crossover episode. That appearance revealed Gibbs is alive and well in Alaska, now sharing his life with a stray dog he took in. Season 3 will expand on those present-day developments significantly.
What else is coming for the NCIS franchise?
While Gibbs fans will find what they are looking for in the prequel, the flagship series has its own major return in store. CBS confirmed that Michael Weatherly is coming back to NCIS Season 24 as Tony DiNozzo for a season-long story arc.
DiNozzo remains one of the most iconic characters in the flagship's history, and his return promises to reshape the show's dynamics. NCIS is preparing for Season 24, and the franchise continues to demonstrate remarkable staying power more than two decades after its debut.
Will Gibbs ever return to the original NCIS series?
CBS has not announced any plans for Harmon to appear in the flagship NCIS series. However, the franchise has proven it can keep secrets when it wants to, as the Season 23 Gibbs reveal demonstrated. For now, fans can look forward to Harmon's 10-episode arc in NCIS: Origins Season 3 this fall.