The original Leroy Jethro Gibbs is about to make a comeback.

Mark Harmon is set to reprise the role he played for 18 seasons during the first crossover event between NCIS and NCIS: Origins set for Nov. 11 on CBS.

The Veterans Day crossover will feature the younger Gibbs (Austin Stowell) and his team investigating the small-town death of a naval officer in the ‘90s on Origins – a case that will be unexpectedly reopened in the present day on NCIS. Because of the crossover, Origins will air for one night only at 8 p.m. ET, followed by NCIS at 9 p.m. ET.

Harmon, an executive producer on both series, has not appeared as Gibbs in CBS primetime since his brief appearance in the Origins pilot last year. He last appeared on NCIS in 2021, when his character decided to leave t

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