In Michigan, the roar in the "Roaring Twenties" was the deafening blast of a sawed-off shotgun or the staccato thunder of a Thompson submachine gun punctuating a bank robbery.  In post-WWI Michigan, a plague of ruthless desperadoes, better armed and driving faster cars than the police, cut a deadly swath across the state ranked eighth in the country for bank robberies.  Tom Powers uncovers a violent and forgotten era in Michigan in 23 riveting chapters.  The Wild West didn't die with the closing of the frontier; it came to Michigan in the 1920s and 1930s.