After more than two decades on television, NCIS continues thriving despite many beloved cast members leaving the team. Over the years, numerous actors have moved on for personal, professional, or creative reasons.
David McCallum portrayed medical examiner Ducky for sixteen seasons before reducing his role. He later appeared as NCIS historian until his passing in 2023, receiving a heartfelt tribute episode.
Fan-favorite agent Tony DiNozzo, played by Michael Weatherly, left after thirteen seasons, citing burnout and a desire for new roles. He soon starred in the legal drama Bull.
Meanwhile, Pauley Perrette shocked viewers by leaving after fifteen seasons as Abby Sciuto, later revealing dissatisfaction with fame and tensions behind the scenes involving co-star Mark Harmon.
Other departures included actors seeking family time, creative opportunities, or less demanding schedules. Despite constant changes, NCIS has proven remarkably resilient, continuing to evolve while honoring the characters who helped build its legacy.
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