A Chicago man is free after a jury found him not guilty of killing his 15-year-old girlfriend in 1981. Gary Albert was 18 at the time of Dawn Niles' death. Niles had been punched and stabbed before being dragged to a Lake, where her body was found by someone riding on horseback. Prosecutors say Albert murdered the teen because she was 3 months pregnant at the time, but the defense claimed there wasn't enough evidence to link him to the crime. Both attended Hinsdale South High School at the time.