He was known as "Umbrella Mike": a hard man among the beautiful people. He moved among the elite of New York society with little notice, his sharply cocked fedora, his broad Irish face and his ever-present cigar setting him apart from the celebrities and socialites. Umbrella Mike is Michael Joseph Boyle, the corrupt leader of Chicago's most powerful union and himself a Chicago gangster on friendly terms with Al Capone. Passionate about high-class...