Jack McGurn, an infamous associate of Al Capone, was gunned down in a Chicago bowling alley on February 15, 1936, seven years after the notorious St. Valentine’s Day Massacre. Though never officially charged in the massacre, McGurn was widely believed to have masterminded the execution of seven members of Bugs Moran’s gang. His violent end came in a public hit, executed by gunmen who shot him multiple times as he prepared to bowl. A mocking note was left at the front desk, further fueling the idea of revenge for his alleged role in the massacre. Two weeks later, McGurn’s brother, Anthony, was also murdered in a pool hall after he boasted of knowing who had killed Jack