On October 24 1992 in Tuscon, Diana Vicari's arms were found in a downtown area dumpster. The rest of her body was never discovered. She was a nine-teen year-old Pima Community College student who was an aspiring Marine Biologist. In 1999, Lemuel Prion was convicted of her murder, but exonerated in 2003, after new evidence linked a man named John Mazure to Diana's murder.

One of Mazure's friends, Gregory Scott Hatton, was also suspected and was arrested months after Diana's murder...