March 2, 1932. Gangster Joe Carroll, sidekick of George "Bugs" Moran, kidnaps 9-year-old Larry Halloran, Jr.-- the son of Lawrence Halloran, president of the United Trucker's Union. It just so happens that at this very moment, Ness and his Untouchables are trying to nail Bugs Moran-- who is now the top criminal in Chicago, since Capone is in prison. Ness leaves Agent Martin Flaherty in charge; Ness has to fly to Washington, DC, since the brass wants him to give Congress the whole story about the Capone operation. Bugs Moran and Joe Carroll phone Lawrence Halloran at his home; they say Halloran should meet them at his union building. There, Moran spells it out: he wants control of Halloran's union. Halloran is to call a meeting of the union, recommend they elect Moran as vice president, and Joe Carroll as executive secretary-- and then Halloran is to keep his mouth shut. In exchange, Halloran will get his kid back; Halloran has no choice but to agree. Flaherty and Youngfellow are tailing Moran the whole time; after Moran leaves, Flaherty talks to Halloran-- but Halloran won't make a move until he gets his son back. Later that night, the kid is returned to Halloran. Next day, Halloran drops in on Flaherty in room 208 of the Federal Building. Flaherty wants to get Moran; but he tells Halloran that as a Federal agent he can do nothing, since kidnapping is not a federal offense, (if it doesn't cross state lines). Halloran leaves, disgusted. Flaherty phones Ness for some sage advice. Ness surprises Flaherty by telling him he should let Moran take over the union: give him enough rope and he'll hang himself. Ness says, let Moran try to put his arm on some interstate hauler, and they'll nail him for violation of interstate commerce: a federal offense. (that's why Ness is the brains of the Untouchables.) Halloran pays a visit to non-union "Patterson & Sons" Trucking & Hauling. Halloran wants to warn them that Bugs Moran is taking over his union, and Bugs will take over their (thetvdb.com)