20/20 - Season 2024 Episode 11 -

In the spring and summer of 1997, four young women vanish in quick succession. Two of them go missing just off Texas Interstate 45, and the other two disappear just a few hours north. Could a serial killer be roaming the highways between Texas and Oklahoma? ABC News correspondent John Quiñones takes viewers inside the decades-long cold case investigation and four families' quest for answers. The report features exclusive footage of a hypnosis session with a fifth survivor that helped lead police to the killer and behind-the-scenes details into the killer's confession.The two-hour episode includes powerful new interviews with the family members of the victims, including Gay Smither, Laura Smither's mother; Jan Bynum, Kelli Cox's mother; Alexis Bynum, Kelli Cox's daughter; Kathy Dobry, Tiffany Johnston's mother; and C.H. and Suzy Cain, Jessica Cain's parents. It also features interviews with members of law enforcement who helped solve the cases after two decades.