"The pulse-pounding story of the first time in history that the FBI Behavioral Unit created a profile to catch a serial killer. On June 25, 1973, a seven-year-old girl went missing from the Montana campground where her family was vacationing. Somebody had slit open the back of her tent and snatched her from under their noses. None of them saw or heard anything. Susie Jaeger had vanished into thin air, plucked by a shadow. The largest manhunt in Montana's...