After Kate Johnson is murdered in her dormitory room, detectives ask why this innocent young woman was targeted; detectives collect 400 DNA samples, establish a secret task force and track down Johnson's killer to get their chilling answer.

When Ashley Benson is found murdered in a trendy Portland, Ore., hotel, detectives quickly dial in on three suspects, all of whom have been romantically linked to Benson whose parents must come to grips with their daughter's secret life.