Frank J. Wilson: The Investigator Who Helped Bring Down Al Capone

Al Capone appeared almost untouchable as Chicago’s criminal empire expanded during Prohibition. But Treasury investigator Frank J. Wilson and his colleagues pursued an unconventional strategy: examining the gangster’s finances. Through painstaking financial analysis and witness testimony, investigators helped establish the evidence necessary for a federal tax prosecution. Discover the remarkable investigative work behind one of America’s most famous criminal convictions.