Mark Harmon to Return as Gibbs in ‘NCIS’ & ‘Origins’ Crossover: See Photo

Mark Harmon as Leroy Jethro Gibbs — 'NCIS: Origins'
CBS

What To Know

  • Mark Harmon will reprise his role as Leroy Jethro Gibbs in the first hour of the NCIS and NCIS: Origins crossover event airing on November 11.
  • Harmon’s return will also reveal what’s new for Gibbs since he was last seen in Alaska.
  • The crossover storyline begins in the 1990s with Gibbs and the NIS team investigating a naval officer’s death, which is later re-opened in the present day on NCIS.

Well, this is certainly going to make the NCIS and NCIS: Origins crossover even more special: Mark Harmon is reprising his role as Leroy Jethro Gibbs in the first hour.

CBS announced the news of Harmon’s special guest appearance on NCIS: Origins during the crossover on Tuesday, October 28. The event will be airing on Veterans Day, Tuesday, November 11, with Harmon appearing in the first hour (the shows swap time slots for the night). See Harmon as Gibbs again in the photo above.

Harmon was last seen onscreen on NCIS in its 19th season and briefly appeared during Origins‘ series premiere in 2024. He serves as an executive producer on both shows and narrates every episode of Origins.

“Four years ago, Gibbs disappeared to Alaska to live a life of solitude,” said co-showrunners and executive producers David J. North and Gina Lucita Monreal in a statement. “We know how much fans have missed seeing Mark and have wondered what Gibbs is up to today. 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.”

Austin Stowell and Mark Harmon

Monica Schipper/Getty Images

Added Harmon, “I’m very proud of the storytelling that David and Gina are doing on Origins. 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.”

The crossover event begins on Origins will Gibbs (Austin Stowell) and the NIS team investigating the small-town death of a naval officer in the ’90s. Then, that case is unexpectedly re-opened in the present day on NCIS.

Valderrama told TV Insider ahead of the new seasons premiering that the crossover is “brilliant in how it deepens how we communicate and how we coexist on the same screen together.”

What are you hoping to see and hear from Gibbs when Mark Harmon appears during the NCIS and NCIS: Origins crossover? Let us know in the comments section below.

NCIS & NCIS: Origins, Crossover, Tuesday, November 11, 8/7c, CBS




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  1. B

    Brenda McComas

    I loved his character on NCIS and thrilled about seeing him again. I wish he had not left the show in the first place !!

    29 1

  2. B

    BlueSword

    This is so so awesome. Missed seeing him as gibbs. Can't wait to see him again.

    14 1

    1. C

      CyanPopcorn

      Gibbs was missed by me.A character never to be repeated a one off person you can't make a duplicate of his perfection.It will make us rematch all the older episodes to see him again. .God bless you Mark.🙏

      Heather Gardner

      3

  3. G

    GoldBug

    Gibbs characters was simple but very complexed at the same time and his relationships with all of the characters was quite meaningful and special... I think that he should come back as a recurring role until something happens to McGee or Vance that corelate to the storyline that's if they ever do something like that.. he's already an executive producer of the series.. and I hope that in Origins they do the back story to how Gibbs Pride and Fab five solved that case and also the back story of how he met Jenny Shepard

    13 2

  4. R

    RedWrench

    I stopped watching Origins 5 episodes in and have never looked back. I’ve always enjoyed NCIS and hope to remember to see LJG’s return and if not, oh well. Kudos to Gary Cole for stepping in and making the role his own.

    16 5

    1. O

      OliveDice

      You're missing a lot by not watching origins, it helps to re enforce the NCIS show and watching old episodes with Gibbs

      2 2

  5. R

    RedBone

    I loved Gibbs anytime he played on the show. Too bad he won't be back on the show as a regular cast member!!!!!!@

    11 2

  6. C

    CyanPopcorn

    Give the man a break he has a personnel life too. It's great he came back for his fans. It's a treat a thank you for watching him all these years his loyal fans understand. Enjoy it Mark..lol

    9 2

  7. P

    PurpleBlowdryer

    It's good to see him again.

    Just hope that the press shows the same excitement when or if someone else in the Verse who hasn't been seen in well longer than a year eventually decides to show up.

    4 1

  8. G

    GoldPopsicle

    I’m excited for Mark Harmon to be back. I miss him! I know it’s just for a crossover episodes but am really looking forward to seeing him again. I like Gary Cole in NCIS. It took me a little bit to warm up to him but he is doing a great job. But I’m team Gibbs always!

    1

  9. O

    OrangeTag

    Gibbs was such a grouch and he seemed to be getting worse. I hope he found what he was looking for. I don’t miss him. I love Gary Cole’s character.

    14 13

    1. B

      BlueCactus

      I totally agree. At least Parker shows different emotions. Something that was lacking in Gibbs. Like it so much better now!

      9 5

      1. C

        CyanBucket

        Me too. After watching the show from the very first episode, I quit watching the last season that Gibbs was on. I wasn't even sure I'd ever watch again (I thought Gary Cole's character would be a Gibbs clone), but I was pleasantly surprised, and I think the show is better now that it had been during many of the Gibbs years.

        2 1

        1. P

          PurplePizza

          Thank you Gary Cole for bringing NCIS back . So refreshing from the Gibs character. The show now has excitement and mystery . Not always worrying about how Gibbs is going to spur the episode.

          1

  10. B

    BlueFlower

    Can't wait, maybe he and LaLa have found each other and live a quiet life in Alaska

  11. O

    OrangeFries

    maybe gibbs and lala could have found each other again.

  12. B

    BluePlanet

    I don't watch CBS any longer. They fail to uphold honor and truth and are becoming a biased arm of MAGA. I don't care about any of their "entertainment" offerings any longer.

  13. G

    GreenTurtle

    I think those crossover episodes will be pure genius on the part of all those involved and I know from my own perspective that I will be thrilled to be seeing Mark Harmon aka Leroy Jethro Gibbs acting again on the NCIS series. Fans have greatly missed seeing him on our tv screens. Welcome back Mark … it all sounds very exciting!!! Can’t wait until November 11th … someone great is returning to the original NCIS series!

    2 2

  14. G

    GoldFlame

    He’s only going to be on Origins which is disappointing if I’m reading it correctly. He’s not ‘alone’. Maybe he’s with Layla in retirement. At 74 he doesn’t need to be on the grind of a weekly program but he’s definitely a busy man. He said he wanted more time with his wife and family when he left NCIS. He’s also paying respects by appearing on Veterans Day, Semper Fi

    1 1

  15. R

    RedButton

    God, that's GREAT! On Veterans Day to have Gibbs back, I've lost interest in NCIS since his departure.

    1 1

  16. P

    PurplePuzzle

    I'm sorry I left.

  17. O

    OliveCactus

    I think it’s awesome. It’s a shame that he it’s not still on the show totally different with them gonna be great to see him on the screen again

    1 1

  18. G

    GoldSubmarine

    Love Gary Cole’s character and him as an actor. I never liked Mark Harmons character and how he treated his staff.

    11 12

  19. G

    GoldPuzzle

    Thanks for letting us know when it will air. I'll be sure to watch something else. I really don't care about Gibbs, either in past or present.

    3 8