After 46 years, the family of Siobhan McGuinness continues to find healing after learning the name of her killer: Richard William Davis. And as we learned, authorities are using genetic genealogy to solve even the coldest of cold cases. In this Breaking News episode of Montana Murder Mysteries, you can hear more about how they connected Davis to the crime, how genetic genealogy is being used to solve cold cases across the country and how they're now reaching out to other law enforcement agencies to find other cold case victims of Richard William Davis.
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