HomeKrimidexGEDmatchConceptGEDmatchDefinitionRead moreGolden State Killer Joseph DeAngelo Caught Using Genetic GenealogyJoseph James DeAngelo Jr., the prolific serial offender who terrorized California for a decade, was arrested in 2018 at age 72 after investigators used pioneering genetic genealogy techniques to identify him as the Golden State Killer.Related articlesGolden State Killer Joseph DeAngelo Caught Using Genetic GenealogyJoseph James DeAngelo Jr., the prolific serial offender who terrorized California for a decade, was arrested in 2018 at age 72 after investigators used pioneering genetic genealogy techniques to identify him as the Golden State Killer.