Who killed Angela Kelley? The 17-year-old high school senior was found dead on the side of a road in Pasadena, Texas, in 1979. She had been bound with electrical wire and strangled to death. For more than four decades, leads in the case fizzled, and her family and friends have had to live with the pain of not knowing who killed her. Now, old evidence is being retested and for the first time, police are sharing her entire case file - hoping Angela's killer might finally be caught.