At the woman’s feet, detectives found a curled strand of telephone wire. Draped over her right hand was a different kind of wire: thin and brown. The same brown wire was wrapped around each armrest of a wooden chair next to her. The following day, July 24, a pathologist in the Cook County medical examiner’s office noticed something else that had been obscured by rotting skin: a thin gag tied around the corpse’s mouth. Thanks to some still-visible tattoos, detectives soon identified this unfortunate woman: Tiara Groves, a 20-year-old from Austin. She was last seen walking alone in the wee...