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 20/20 'I'm Going to Get You.' Stream on Disney+ and Hulu (S48, E8). #TrueCrime #Mystery #DebbieDorian