When a da Vinci masterwork is stolen from a private collector, Puller Monk is assigned to the case. Monk's private demons have worked for him before. No ordinary agent, he plays by his own rules. He's just what the FBI needs. Because what they're looking for is no ordinary thief…A young chameleon assassin, she was bred to kill. An American sleeper spy, she answers to many names, adapts to each identity, and is trained in every deadly art. Only a select few know who she really is. Only they know her ultimate objective: take out Puller Monk.A killing game begins between the agent and the sleeper. Both are the hunted. Both are the hunter. But when Monk finds himself seduced by his own past he also finds himself doomed by the dark side that was once his only salvation.