Trisha Macmillan isn't anyone special, just an ER nurse in a busy Boston hospital, with no love life to speak of and only her cat Marco to keep her company on the cold winter nights.All that changes when the police bring in a man discovered unconscious in the snow, viciously mauled by a wild animal in the very heart of the city. Two men have come looking for her mysterious patient and they couldn't be more different. Lionel, the detective investigating the case, is handsome, charming, and wealthy. Hawk, powerful, rough-edged, and cynical, claims to be a friend of the victim. They seem to know each other and both are drawn to her for some reason, but she's not sure either of them can be trusted.Trisha's world is suddenly turned upside-down when her patient disappears without a trace, leaving her with too many questions and no answers. Who is he and why are Lionel and Hawk so anxious to find him? Who - or what - attacked him? And where is he now? The sketches he left behind must hold the key, but time is running out quickly. Someone - or something - is stalking her but who can she turn to for help? If she chooses the wrong man, the consequences could be fatal.