New York City. A wealthy businessman meets a violent fate in his elegant, carefully-secured home in Queens. Two drug dealers are murdered in a Brooklyn no-tell motel room. Several men are found riddled with bullets and nails on a little-traveled road beneath FDR Drive. And soon thereafter, a church, a synagogue, and a mosque find bags of cash waiting at their doorsteps-all from a vigilante who signs himself "Justice." NYPD Detective First Grade Brian...