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Eddie Constantine is the two-fisted star of Le Grand Bluff. Cast in a more sympathetic role than usual, Constantine plays a good-natured con artist who promotes a phony oil well. Imagine his surprise when the well yields a valuable gusher (this same plot device was utilized by Olsen and Johnson in the 1937 Hollywood comedy Country Gentlemen). Turning over a new leaf, our hero defends the well's stockholders against a criminal cartel. The story affords plenty of opportunities for Eddie Constantine to punch out the bad guys -- and to be punched out in turn.