In this episode, Bob and Erica chat with the host of the award-winning podcast “Once Upon a Crime,” Esther Ludlow. Esther tells the story behind the story for a new, solved true crime case each week. Esther tells Bob and Erica about how she became interested in true crime, her experiences teaching at juvenile detention centers, and how her podcast got started. They also discuss the disappearance of 15-year-old Sierra LaMar, who went missing on her way to the bus stop near her home and was never seen again.