After a shootout claims the life of his partner, Detective John Tallow unwittingly stumbles across an apartment stacked high with guns. When examined, each weapon leads to a different, previously unsolved murder. Someone has been killing people for twenty years and storing the weapons together for some inexplicable purpose. Tallow soon discovers that he's walked into a veritable deal with the devil. An unholy bargain that has made possible the rise of some of Manhattan's most prominent captains of industry. A hunter who performs his deadly acts as a sacrifice to the old gods of Manhattan, who may, quite simply, be the most prolific murderer in New York City's history.