From the inside flap: She was a popular college student working a summer job in the suburbs of middle America. He was a maintenance man with a police record and an alias. By grim chance, they crossed paths, and within minutes Ali Kemp lay dead - beaten and strangled in the pump room of a neighborhood swimming pool where she worked. On television, "America's Most Wanted" told her story to the country. Along highways, billboards implored motorists to...