Grim Sleeper Case: Familial DNA Breakthrough Two decades of unanswered murders in Los Angeles ended with a controversial scientific breakthrough. When Christopher Franklin entered the DNA database after a 2008 conviction, detectives ran a familial search and traced a partial match to his father, Lonnie Franklin Jr. After collecting a discarded pizza crust and confirming a DNA match, police arrested Lonnie on July 7, 2010 — a case that proved familial DNA could crack cold cases nationwide. If you

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