Mark Harmon Returning as Gibbs in ‘NCIS: Origins’ Season 3 Story Arc

According to Variety, Mark Harmon will return as the legendary Leroy Jethro Gibbs in season three of the prequel series NCIS: Origins. He'll appear in every episode as part of a season-long story arc. For longtime fans, it's a chance to see how the iconic character's legend began.

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