Mark Harmon spent nearly 20 years playing the role of Leroy Jethro Gibbs on NCIS, and it’s not an understatement to say his performance is a big part of the reason the franchise exists as it does today, with multiple spinoffs over the years. NCIS: Origins, which tells the story of Gibbs’ early career, recently crossed over with the main show, marking the occasion with a rare return appearance from Harmon, his first since leaving the show in 2021.
One of the things that's always made Gibbs such a fun and intriguing character is his list of Rules. Across his life and career, Gibbs created the series of specific guidelines that the O.G. show often referred back to. The recent crossover episode dealt specifically with one of those rules, No. 11: "When the job's over, walk away." Origins co-creator David J. North recently told EW about talking with Harmon while doing voice work for the new episode, and it turns out the Rules are a favorite topic among fans. North explained:
