Ten days after the Mexican presidential election, twenty-three bodies are discovered beheaded on the border between the U.S. and Mexico. Leading the investigation for the Mexican intelligence agency is 35-year-old Cecilia Garza, a raven-haired beauty who''s notorious for her intensity and take-no-prisoners demeanor. Garza has learned the hard way that a forgiving nature can be an officer's worst enemy. Upon the bodies of the cartel's victims she finds a carved symbol-a Hummingbird-and recognizes it as the mark of an assassin known only as Chuparosa, a man both feared and celebrated for his brutality. Even Garza, who has been pursuing him for years, knows almost nothing about him. Except that he's now headed to New York. Meanwhile, it is United Nations week in Manhattan and a grieving Jeremy Fisk is dealing with the loss of his partner and lover and the trial of the Swedish terrorist responsible for her death. There''s no time for grief, though, when you're responsible for the safety and security of the world's most powerful leaders. Complicating matters is the startling news of a mass murder in nearby Rockaway, where a dozen people have been found dead. Fisk may not like Garza, the pushy new arrival from Mexico, but they''re going to need each other if they stand a chance of finding and stopping Chuparosa. Soon they both realize that there's more to this threat than meets the eye-and Fisk will have to learn the hard way that justice is not always blind.