The city of Chicago led the nation when it came to gangland violence during the Prohibition era. As a result, many infamous, unforgettable personalities became a part of America's criminal history.
Chicago Assassin is the story of "Machine Gun" Jack McGurn, one of the people responsible for putting much of the roar into the Roaring Twenties. McGurn was born in Liscata, Sicily, on February 15, 1905, as Vincenzo Antonio Gibaldi. His family immigrated to Chicago in 1906, and he grew up in the city's slums and later took up boxing as "Battling" Jack McGurn.
Known to have been a well-mannered, law-abiding young man, he changed dramatically when his father was assassinated by members of the White Hand Gang in a case of mistaken identity. After he avenged his father's death by killing the three hit men responsible, he came to the attention of Al Capone, who invited him into his organization, known as the Chicago Outfit. There he rose to power and was one of the most feared members of Capone's organization, with more than twenty-five known kills for the mob. "Battling" Jack McGurn became so adept with the Thompson submachine gun that he quickly became known as "Machine Gun" Jack McGurn.
McGurn's most famous killings became known as the St. Valentine's Day Massacre, which he planned in an effort to eliminate Bugs Moran, the North Side gang leader who was Capone's biggest competitor. He avoided prosecution for that crime due to the testimony of his girlfriend, Louise Rolfe; he later married her and she refused to testify against him. In an ironic turn of events, McGurn was murdered on Capone's orders seven years later in a Chicago bowling alley on the eve of St. Valentine's Day, most likely because he ahd gotten involved with narcotics.