On January 26, 1979, Las Vegas teenager, Kim Bryant, hung out in a Dairy Queen parking lot with a friend. But when it came time for Kim’s boyfriend to pick her up and take her home, Kim was nowhere to be found. She had mysteriously disappeared from a busy Las Vegas street without a trace. Initially, the police treated Kim like a runaway. But her family and friends didn’t think Kim would do that. For the next four decades, the police and Kim’s family worked tiredly to find out what happened in that Dairy Queen parking lot that morning.