In the summer of 1997, Fiona Yu was about to begin her senior year at Arizona State University. One August afternoon, Fiona left her on-campus job and took her usual bike route home. Just a half-hour later, her roommate arrived to find Fiona barely clinging to life, after being sexually assaulted and strangled. Six weeks later, two more ASU students were raped on consecutive days. After DNA evidence cleared two suspects, police hoped expert criminal profiler John Yarbrough could help. After three years, Yarbrough offers to provide local authorities with new information.