:max_bytes(150000):strip_icc()/NCIS-102825-1-45854be259f640608d9dae5eb26d8721.jpg "Mark Harmon is returning as Gibbs for NCIS: Origins crossover event")
The actor will make an appearance in an upcoming crossover event between the flagship series and its prequel. Mark Harmon is returning as Gibbs for NCIS: Origin
The actor will make an appearance in an upcoming crossover event between the flagship series and its prequel.
Mark Harmon is returning as Gibbs for *NCIS: Origins *crossover event
The actor will make an appearance in an upcoming crossover event between the flagship series and its prequel.
By Emlyn Travis
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Emlyn Travis is a news writer at **. She has been working at EW since 2022. Her work has previously appeared on MTV News, Teen Vogue, and *NME*.
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October 28, 2025 5:10 p.m. ET
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Austin Stowell on 'NCIS: Origins,' Mark Harmon on 'NCIS'. Credit:
Robert Voets/CBS; Sonja Flemming/CBS
*Mark* your calendars, everyone, because Mark Harmon is officially reprising his role as Leroy Jethro Gibbs on *NCIS: Origins* next month.
The actor, who starred as Gibbs for over 18 seasons on *NCIS*, will make a special guest appearance as part of the first-ever crossover event between the flagship series and its prequel on Nov. 11. The crossover will see the younger version of Gibbs (played by Austin Stowell) and his *Origins* teammates investigate the death of a naval officer in the 1990s, only for the case to be unexpectedly re-opened over three decades later on *NCIS*.
"I'm very proud of the storytelling that David and Gina are doing on *Origins*," Harmon said in a press release. "They continue to push boundaries and dive deeper into the characters' backstories. They came to me with an idea for Gibbs that I liked, and it seemed like a good time to check in with him. I hope fans enjoy it."
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Mark Harmon to make a special guest appearance as Leroy Jethro Gibbs on prequel series 'NCIS: Origins'.
In order to properly tell its decades-spanning mystery, *Origins* and *NCIS* will be switching their respective time slots for the evening. *Origins* will air first at 8 p.m. ET/PT, with *NCIS* following afterward at 9 p.m. ET/PT.
"Four years ago, Gibbs disappeared to Alaska to live a life of solitude," co-showrunners and executive producers David J. North and Gina Lucita Monreal said in a statement. "We know how much fans have missed seeing Mark and have wondered what Gibbs is up to today."
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The statement continued, "Well, on Nov. 11, we're so excited to announce that Mark Harmon will return as Leroy Jethro Gibbs in the *Origins* hour of the *NCIS* crossover event. We don't want to give too much away, but let's just say Gibbs is no longer alone."
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While Harmon may have officially exited *NCIS* in 2021, he remains an integral part of the ongoing *NCIS*-verse. Not only is he an executive producer on both *NCIS* and *Origins*, but he also narrates the prequel series and made a brief appearance in its very first episode last year.
The *NCIS* and *Origins* crossover event will air on Nov. 11 on CBS, and will also be available on streaming on Paramount+.
Source: "AOL TV"
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