After 40 years, Detective Joseph Ebert has finally discovered the identity of a young girl who was murdered and left on the side of a road outside of Henderson, Nevada. Dubbed “Jane Arroyo Grande Doe,” by John Williams, the original investigator on the case, it has been confirmed that “Jane” was actually 17-year-old Tammy Tarrell of Artesia, New Mexico. But part of this mystery remains unsolved: Who killed Tammy Tarrell?