Summer camp at Camp Scott in Oklahoma was supposed to be a cherished Girl Scout tradition. But on June 13, 1977, the unthinkable happened - three young girls were found murdered at their campsite, just yards from their sleeping cabins. The brutal crime shocked the nation, but it was only the beginning. Strange notes, a possible Native American curse, and threatening letters discovered months before the murders paint a chilling picture of premeditation. In this episode of True Crime: Untold Cases, we examine the haunting details that preceded the tragedy, the botched investigation that followed, and the questions that remain unanswered after more than four decades.