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Even their fellow hoodlums are in mortal terror of the Purple Gang, a Detroit-based operation led by Eddie Fletcher (Steve Cochran). Now the Gang has come up with racket that surpasses all their previous achievements: namely, kidnapping other mobsters and holding them for ransom, knowing full well that their victims can't go to the police. But Fletcher sets the stage for his own inevitable downfall when his boys snatch Jan Tornek (played by a pre-Hogan's Heroes) Werner Klemperer), a minor functionary of the Capone gang who is presently under surveillance by Elliot Ness (Robert Stack) and the Untouchables.