Erin Moriarty revisits her investigation into a double murder committed by then 15-year-old Daniel Marsh, who has just been granted permission to appeal his prison sentence. An elderly couple is stabbed to death in their Davis, California home, with no evidence left behind. But months later, cops receive a phone call that places suspicion squarely on a former local hero. Based on the 48 Hours investigation, “Portrait of a Killer”. Contains strong language and graphic depictions of violence.

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