The 22-year-old's father found the door to her apartment unlocked - an unusual find for the security-conscious college student. Unfortunately he'd find Debbie Dorian's body on the living room floor. JujuChangABC unravels the mysterious case during a new "20/20" episode, "I'm Going to Get You," premiering Friday, Nov. 14th at 9/8c on ABC. Stream on DisneyPlus and Hulu. #TrueCrime #Mystery #DebbieDorian