Episode 3.02 The St. Valentine's Day Massacre and the Chicago Gang Wars of the 1920s

In Prohibition Era Chicago, competing gangs of bootleggers battled for supremacy. In February 1929, notorious gangster Al Capone set up a brazen trap to mow down a slew of his rivals in what would become one of the most infamous crimes of the time. It would also lead to the creation of America's first-ever crime laboratory, and mark the beginning of the end for some of the most powerful criminals in American history.