Enquete speciale

U.S. Treasury Investigator Joe Dennison is sent to England on the trail of a gang of thieves who stole a million dollars from a U.S. Treasury vault. One of the crooks is on his way to England to spend the loot on phony diamonds. Scotland Yard Inspector "Mac" McClaren, who's assigned to work with Dennison on the case, is also working on the disappearance of atomic scientist Dr. Eric Miller. Dennison discovers while interviewing Miller's daughter Marlene that she is wearing a brooch containing a phony diamond - a brooch that had been made by her father.