The Story of Chicago mob boss Johnny Torrio. The bootlegging wars of the 1920s in Chicago are detailed in Urbs in Horto. From 1919 - 1925 Chicago was divided in illegal activities by two mob... Read allThe Story of Chicago mob boss Johnny Torrio. The bootlegging wars of the 1920s in Chicago are detailed in Urbs in Horto. From 1919 - 1925 Chicago was divided in illegal activities by two mob bosses, Johnny Torrio and his counterpart in Northern Chicago, Dean O'Banion. The film is... Read allThe Story of Chicago mob boss Johnny Torrio. The bootlegging wars of the 1920s in Chicago are detailed in Urbs in Horto. From 1919 - 1925 Chicago was divided in illegal activities by two mob bosses, Johnny Torrio and his counterpart in Northern Chicago, Dean O'Banion. The film is based on a true story but does include fictional events.