Five years ago, three young victims were found dead, posed like little angels. There were no witnesses. Strangely clean scenes. The Sleeping Angel Killer called his despicable acts 'the perfect crimes'. The case immobilized the close-knit community of Rockford, Illinois, and nearly destroyed homicide detective Kitt Lundgren's career - and her life. During the investigation, Kitt tragically lost her own child to illness. She was overwhelmed by the death of her daughter, and the final blow was the crushing realization that she let the killer get away. Familiar with every nuance of the cold-case file, Kitt knows there's something different about this new rash of killings - a tiny variation that opens terrifying new possibilities. Is the Sleeping Angel Killer really back, or is a copycat killer re-creating the original 'perfect crimes'?