Overview of the Connection Between Paul Holes and Joseph James DeAngelo

Paul Holes, a retired investigator from the Contra Costa County District Attorney's Office, played a pivotal role in the identification and arrest of Joseph James DeAngelo, known as the Golden State Killer. Their connection is rooted in a legal and investigative context, with Holes dedicating over 20 years to solving the case of the serial offender responsible for at least 13 murders, 50 rapes, and 120 burglaries across California from 1974 to 1986. DeAngelo, a former police officer, evaded capture for decades until Holes and his team employed innovative forensic genealogy techniques to pinpoint him as the suspect in 2018.

Evidence and Timeline of the Investigation

The connection between Holes and DeAngelo is substantiated by verified evidence from the investigation. Holes began working on the East Area Rapist/Golden State Killer case in the 1990s, focusing on cold case files and unresolved DNA evidence. By 2017, traditional investigative methods had failed to yield a suspect, prompting Holes to advocate for forensic genealogy—a then-emerging technique. Collaborating with the FBI and genealogist Barbara Rae-Venter, Holes uploaded crime scene DNA to GEDmatch, a public genealogy database. Through meticulous family tree analysis, the team identified DeAngelo as a match in early 2018. Surveillance and a discarded DNA sample confirmed the link, leading to DeAngelo’s arrest on April 24, 2018. Notably, Holes retired just one day before the arrest was publicly announced, marking the culmination of his decades-long pursuit. DeAngelo later pleaded guilty to multiple charges in June 2020 and was sentenced to life without parole in August 2020.

Significance to the Golden State Killer Case

The relationship between Paul Holes and Joseph James DeAngelo is central to the resolution of one of the most notorious cold cases in American history. Holes’ persistence and willingness to embrace forensic genealogy broke through decades of investigative dead ends, setting a precedent for using genetic databases in criminal investigations. This breakthrough not only led to DeAngelo’s identification and conviction but also brought closure to countless victims and their families affected by the Golden State Killer’s reign of terror. Furthermore, the case highlighted DeAngelo’s background as a former police officer in Exeter (1973-1976) and Auburn (1976-1979), raising questions about how he exploited his position to evade detection while committing crimes. Holes’ work underscored the potential of modern forensic tools to solve long-standing cases, reshaping investigative practices and cementing his role as a key figure in bringing DeAngelo to justice.