A couple's murder over 40 years ago remains unsolved, but a breakthrough in 2021 finally revealed their identity and helped investigators find their missing daughter. 'Baby Holly' now shares her story with DavidMuirABC. Watch 20/20 'Baby Holly Found' encore air Friday (Aug. 21st) at 9/8c on ABC. Stream on Disney+ and Hulu (S46, E6). #TrueCrime #DNA #Mystery #BabyHolly