50 Years Later Investigators Found Cold Case Killer

In a significant development, investigators in Wisconsin utilized genetic genealogy to solve a 50-year-old cold case. After decades of investigation, they identified Jon Miller as the suspect in the 1974 homicide of Mary K. Schlais. Miller, an 84-year-old Minnesota man, was arrested after confirming his involvement in the case, which had previously yielded no viable leads. This groundbreaking use of genetic genealogy, a technique combining DNA analysis with family history research, allowed investigators to overcome obstacles like Miller's adoption and ultimately bring closure to a long-standing mystery.