Sharon “Shari” Faye Smith was abducted from her own driveway in May 1985. For days, her abductor tortured her family by making phone calls promising she was alive and well until her body was discovered. Forensic scientists were able to examine the letter using Electrostatics Detection Apparatus (ESDA) to reveal indentations and impressions in the letter that would have otherwise gone unnoticed. These indentations led police right to Shari’s abductor and killer.