In the dark shadows of a summer evening a young woman is brutally slain by a remorseless killer's razor sharp blade. Learning that her closest childhood friend was nearly killed in the same incident, Portland Detective Maggie Savage rushes to the scene to join the State Police investigation. Maggie soon discovers the killer's name is Conor Riordan. There's only one problem. Conor Riordan doesn't exist.

The only person who can provide a clue as to who Riordan really is, is the victim's eleven–year–old sister, Tabitha. And now Tabitha has turned up missing. Soon Maggie and her longtime partner, Detective Sergeant Michael McCabe, find themselves in a desperate race against time to find the missing child before she becomes a vicious killer's next victim.