Overview: Chicago. By the middle of 1933, Eliot Ness and his Untouchables had almost checked the manufacture and sale of whiskey in Chicago. But the biggest operator was still in business: Giuseppe Marconi a.k.a. Gus Marco. He was an apparently respectable owner of a garage of taxis by day; but he trafficked in bootleg booze by night, he had a huge distillery underground in which he processed stolen industrial alcohol.