Mark Harmon does not currently appear in new episodes of NCIS as a series regular and has not been part of the active cast since his departure after the conclusion of Season 20. He has not announced any return to the series in new episodes, while past appearances and behind-the-scenes decisions that shaped his long tenure remain relevant to understanding his legacy on the franchise. This explainer clarifies his current involvement and outlines key phases of his time in the CBS universe, including roles, episode counts, and production transitions. Below, you will find verified details, timelines, and context intended to serve as a durable reference.
Status Updates
Mark Harmon and NCIS: Current Status and Career Context
Mark Harmon does not currently appear in new episodes of NCIS as a series regular and has not been part of the active cast since his departure after the conclusion of Season 20....
Mark Harmon and NCIS: Current Status and Career Context
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