Detroit, August 1932. The notorious Purple Gang-- long synonymous with terror in beer, booze, labor and prostitution-- gets into a new racket: kidnapping. They specialize in snatching other members of the underworld, since they can't go to the police for help. So far, they've kidnapped 9 hoods (the latest mug is Rocky Garver), for a total of 100 grand. The Purple Gang's leader is Eddie Fletcher, bank robber and murderer, who always wears gloves so he never leaves any fingerprints. Next on their list of gangsters to be kidnapped is Ian Tornek, who owns a novelty shop along with his brother-in-law Eric Vajda, who arrived from Europe 7 months ago. But Eliot Ness and his Untouchables also have their eye on Tornek: he's a Capone henchman, who makes a weekly pickup of narcotics every Thursday at 5:00 p.m. at the Railway Express Agency. So Ness and Lee Hobson and Enrico Rossi fly to Detroit. Fletcher's boys snatch Tornek just before his weekly pickup; they phone his wife Martha and de