 The story of Lt.  Joseph Petrosino  (qv), an Italian-American New York City police detective, who was assigned to investigate the Sicilian Mafia, which was beginning to become a major problem in New York. He did such a good job that the city sent him to Sicily to gather information on the Sicily/New York Mafia connections. He was murdered in Palermo by Mafia gunmen. The 1960 film _Pay or Die (1960)_ (qv) starring  Ernest Borgnine  (qv) was also based on his life.