In June 1996, twenty-two-year-old Aimee Willard — a two-sport All-American athlete at George Mason University and a beloved daughter of the Philadelphia suburbs — vanished on her drive home from a night out with friends. Her car was found running on an Interstate 476 off-ramp in the early morning hours, door open, radio still playing. She was nowhere.

What followed was a sprawling, shocking investigation: a police impersonator who showed up at the crime scene, an off-duty state trooper with a suspicious story, an actual officer who lied to investigators, and ultimately, a convicted murderer who never should have been free.

In this episode, Ed and Melissa walk through the case that haunted a region, examine the catastrophic failures of the interstate parole system, and reveal how Aimee's mother, Gail Willard, channeled  ...