Graduate students Zo and Holli only mean to blow off some steam on their road trip to Las Vegas. But something goes terribly wrong on their way home, and the last time Zo sees her, Holli is in the clutches of a sadistic killer. Zo flees with her life, changed forever. A year later and still tortured with guilt, Zo latches on to a police investigation where the crime eerily resembles her abduction. Along with a zealous detective, she retraces...