Mary Jayne Jones Homicide — SOLVED Mary Jayne Jones 17 YOA Blakesburg, IA / Ottumwa, IA Wapello County Case Number: 74-00243 April 9, 1974   Mary Jayne Jones, 17, of Ottumwa, Iowa, was found slain in a farmhouse near Blakesburg, Iowa, on Tuesday, April 9, 1974. She had been sexually assaulted and shot once in […]