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Abby Sciuto, portrayed by Pauley Perrette, was a beloved forensic scientist in the popular crime drama NCIS. Perrette graced our screens as Abby for an impressive 15 years, from the show's debut in 2003 until her departure in 2018. Her portrayal of the eccentric yet brilliant character left an indelible mark on the series, making Abby a fan favorite and a cornerstone of the NCIS team.