When two young women are murdered on the streets of Manhattan - exactly one year apart, both after dates arranged through an online dating website - Detective Ellie Hatcher is moved to a special assignment on the elite homicide task force. The killer has left behind a taunting hint connecting the two cases, and Flann McIlroy, an eccentric and publicity-seeking homicide detective, is convinced that Ellie is uniquely situated to help him pursue a terrifying theory: someone is using the lure of the internet and the promise of love to launch a killing spree against the women of New York City. Ellie's involvement in the investigation is personal. She fits the profile of the victims and knows what the pursuit of a sociopath can do to a cop - her own father spent his life trying to identify a notorious serial killer. When the killer begins to parallel the conduct of the murderer who consumed her father, Ellie knows it has also become personal for him, too. In a dangerous game where she is both hunter and prey, Ellie's only choice is to find the killer before he claims his next victim - who Ellie knows could very well be herself.