House of Secrets plot
Larry Ellis is a solid British sailor who is forced into France to smuggle gold for a smuggling ring. One of the gang members mistook Ellis as his contact, who looked just like him, but had been murdered earlier. One day, Ellis is arrested and interrogated by the CIA. Ellis can prove his innocence, but the CIA asks him to do undercover work for them in order to round up the smuggling ring. Ellis does it so well that the police don't trust him and he is molested by them. The smugglers learn of this and they send the attractive Judy Anderson to Ellis to discover his true identity. Ellis is no longer safe from the smugglers either.