Former U.S. Marshal Simon Fisk is now a private contractor, recovering children kidnapped by their own estranged parents. He won't touch stranger abduction cases - he's still haunted by the disappearance of his own daughter years ago, and stranger kidnappings hit too close to home. Until 6-year-old Lindsay Sorkin disappears in Paris, and the French police deliver Simon an ultimatum: he can go to jail for his actions on a past case or he can work with them to find Lindsay. Simon sets out in pursuit of the missing child, but her captors did not leave an easy trail, and following it will take Simon through the ritziest nightclubs and the seediest back alleys, into a terrifying world of international intrigue and dark corners of his past he'd rather never face again.