AllMovie

The six Genna brothers have figured out a clever method to make and distribute illegal whiskey right under the noses of Elliot Ness (Robert Stack) and the Untouchables. The Gennas smuggle illegal immigrants into Chicago's Little Italy district, then force them to manufacture whiskey in their homes, lest they be turned over to the immigration authorities. Though Al Capone has warned gang boss Mike Genna (Marc Lawrence) never to put his trust in "greenhorns", the plan works beautifully--until a careless gang member makes the mistake of killing the daughter of immigrant bootlegger Carlo Giovanni (Frank Puglia).