Four bizarre, high-profile killings in two days. Even for the NYPD's elite Major Case Squad, that's quite a bloody handful. All four victims were themselves predators; violent drug dealers and thugs who preyed on New York's most vulnerable. But as Detective First Grade Brian McKenna and his partner Cisco Sanchez, are about to learn, it's only just begun to hit the fan.What really sets these killings apart is when the killer contacts the press, boldly detailing each of the victim's transgressions in a letter signed only with the name, "Justice." And when substantial sums of money taken from the criminals begins to appear in the collection plates of various religious and social groups around the city, it seems that a lethal Robin Hood has emerged to take back the city's streets.But Brooklyn isn't Sherwood Forest, and Robin Hood never savagely tortured his victims before slaying them. Now, caught between a public cheering for their quarry and the crushing pressure of the Commissioner's office, McKenna and Sanchez, have to track down an imaginative and efficient killing machine who shows no signs of slowing his mortal vengeance.