Calvin Goddard was a pioneer of ballistics science, a technique that could tell if a discharged bullet matched a certain weapon. It would revolutionize law enforcement in the violent age of Chicago's mobs.
In the 1920s, Americans blatantly ignore Prohibition, while gangsters and small-time bootleggers use it as an excuse to build a gigantic underground industry. Up until this point, the federal role in crime prevention barely existed, but new president Herbert Hoover marshals the power of the state against it and Al Capone, the nation's most famous outlaw. Witness their epic battle, which reshaped American law enforcement as we know it, and see how changing attitudes and a national crisis finally brought an end to the ban on liquor.
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