Watch Lady of the Dunes live

In 1974, the body of an unidentified woman was discovered in a remote area of the dunes in Provincetown, Massachusetts. Over the next 50 years, a legend grew as investigators worked tirelessly to identify her. Her case haunted several members of the Provincetown Police Department, stymieing even its most seasoned officers. The twists and turns of the Lady of the Dunes mystery tell the story of a hidden family, a suspect's violent past, and a detective willing to sacrifice her career for answers. Lady of the Dunes: Hunting a Cape Cod Killer tracks the story of Ruth Marie Terry and the pursuit of her killer.