The Peoria State Hospital was once the finest facility in the world for the care of the mentally ill. The asylum closed its doors in 1973, but the hilltop remains active to this day. Instead of the conversations of patients and the squeak of nurses' shoes, the halls now echo with the beeps of KII meters and the hiss of spirit boxes. It's still a busy place.And for the spirits of many of its patients, it is still home.Sylvia Shults returns to the hilltop,...