Mark Harmon returns as Leroy Jethro Gibbs in the ‘NCIS’ universe — here’s when his comeback episode drops

Mark Harmon Returns as Leroy Jethro Gibbs

After four years away, Mark Harmon is returning to the 'NCIS' universe as Leroy Jethro Gibbs in a special crossover event.

The beloved agent is coming back to the field, promising major surprises for 'NCIS' fans. Harmon originated the role of Gibbs in 2003 and stepped away in 2021.

According to Deadline, Harmon will make a special guest appearance during an 'NCIS' and 'NCIS: Origins' crossover event, airing November 11, on CBS.

Get ready, 'NCIS' fans, because Leroy Jethro Gibbs is coming home.

Author's summary: Mark Harmon returns as Gibbs in NCIS.

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MEAWW MEAWW — 2025-11-03

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