Where did 20-year-old Keith Mann go after a secret 12:15 a.m. meeting in May 1997, and why was a borrowed dealership car left in a church lot beside his parents' home? This Crime Junkie episode unpacks a disappearance still unsolved decades later. Keith Mann vanished in May 1997 after telling coworkers he had a secret midnight meeting, and no one has ever identified the person he planned to meet.