Lily has spent many years serving the CIA, and has become the most efficient and dangerous killer of the Agency. But now for the first time, has decided to break the rules. The tragic death of her former colleagues and her adopted daughter, the people she loved most in the world, is something that can not forgive, even if that means defying her chiefs and act on her own. Moved by an irresistible desire for revenge, becomes an effective killing machine against her enemies. Now not only faces the criminals who pursues, but the agency itself has put its best man on her trail. Luke Swain fully understands the reasons for Lily, but he knows his job is to bring her back ... dead or alive. Begins a double persecution filled up with suspense, in which justice, loyalty and duty keep a pulse to the death between the protagonists