DNA analysis helps ID homicide victim 4 decades later

Helix4CLARK COUNTY, Wash. – DNA analysis and years of persistence has led to the identification of human remains found nearly 41 years ago.
Who killed Martha Marie Morrison is still a mystery. Her remains, as well as the remains of Carol Platt Valenzuela, were found in October 1974 in the Dove Valley area of Clark County, according to Clark County Public Information and Outreach.