Johnny Cool

Johnny Colini, an exiled American living in Rome, rescues Salvatore Giordano, a young Sicilian outlaw, from the police. After Giordano is groomed, polished, and renamed "Johnny Cool," Colini sends him on a mission of vengeance to the United States to assassinate the men who plotted his downfall and enforced exile. Johnny arrives in New York and quickly kills several of the underworld figures on Colini's list.