In summer 1973, seven-year-old Susie Jaeger vanishes from her tent at a Montana campground, sparking a case that would become a landmark test of FBI criminal profiling—a technique barely in its infancy. When a man begins taunting her family with calls and letters, investigators discover a pattern of murders connected to one local carpenter, David Meirhofer, whose confession and subsequent suicide left chilling questions unanswered. FBI profilers accurately predicted the kidnapper would call again on a significant date and exhibit behavior matching a local, unmarried psychopath with military experience, validating criminal profiling as a investigative tool before its widespread acceptance.