Why Mark Harmon's Son Didn't Play Young Gibbs On NCIS: Origins
Mark Harmon's son, Sean, portrayed a younger version of his father's "NCIS" character several times, so why didn't he reprise ...
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Why Mark Harmon Almost Left NCIS After Season 4
NCIS star Mark Harmon very nearly walked away from the show after season 4 due to a behind-the-scenes clash with one of his ...
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Actors Who Were Considered To Play NCIS' Gibbs Before Mark Harmon
Mark was a big deal, and everybody thought, 'We'll make an offer to Mark Harmon, and when we don't get him, let's go through the list of who else ... A bona fide movie actor who often appeared ...