A United States Department of the Treasury agent works against smugglers on the border between Spain and France. He has a personal interest as his brother who was part of the gang was murdered by them. The gang smuggles watches into Spain and brings counterfeit American money into England that is used to buy gold that is melted down and shipped to Continental Europe.
The film features locations in Barcelona, including La Rambla in the opening images. Later, when Richard Greene follows the villains (both travelling in taxis), they get out in Plaza Real with its arcaded pavements.
The seaside town of Blanes also appears, and there is much driving to and from the French town of Urdos over the border from Girona province.[2]
Critical reception
TV Guide wrote, "a lot of action against beautiful continental backgrounds makes up for weaknesses in plot structure" ;[3] while Allmovie called it a "fast-paced espionager."[4]