Christopher Abernathy, 48, claimed his freedom one more time after the Cook County State’s Attorney lifted his life sentence. The last year DNA test had excluded Abernathy from previous DNA evidence obtained many years ago. He was 18 when he was arrested in the rape and murder of 15-year-old Kristina Hickey, who disappeared Oct.3, 1984. Back in the ‘80s, Abernathy signed an admission of guilt – which Cook County State’s Attorney Anita Alvarez called “quite thin”, since Abernathy has a “diminished mental capacity”. So for now, the killer of Kristina Hickey has still not been identified.