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NCIS' Most Impotrant Gibbs Rule Isn't What You Think

The following contains spoilers for NCIS Season 23, Episode 4, “Gone Girls,” which aired on Tuesday, November 4, on CBS. Created over Mark Harmon’s nearly two decades on NCIS and continued by Austin ...
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Mark Harmon Returning As Gibbs In NCIS: Origins' Crossover Event With NCIS — First Look

Daddy's home! Mark Harmon, who played Leroy Jethro Gibbs for 19 seasons on "NCIS," will reprise his role in an upcoming Season 2 episode of CBS' prequel series "NCIS: Origins," TVLine has learned.