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Paul Holes (born March 15, 1968) is an American former cold-case investigator for the Contra Costa County Sheriff's Office. Holes is known for his contributions to solving the Golden State Killer case using advanced methods of identifying the killer with DNA and genealogy technology. Since retiring in March 2018, Holes has contributed to books, television, and podcasts about the Golden State Killer and true crime.

Holes studied at the University of California, Davis, from 1986 to 1990. There he received his Bachelor of Science in biochemistry.

Holes was sworn in as an investigator for the Contra Costa County Sheriff's Office in Martinez, California, in 1994. In the same year, Holes first discovered the cold case files of the East Area Rapist (EAR). His interest in the case was ignited and he remained close to the files, reviewing them any chance he had between active cases in Contra Costa County until a DNA break in 2001 expanded the case even further. When DNA from the EAR matched other unsolved murder crimes throughout California, the case again gained traction and had expanded in evidence.