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The working title of this film was The Gloved Hand. According to a May 1946 Hollywood Reporter news item, Wallace MacDonald was to replace Leon Barsha as producer after Barsha left Columbia to work at Universal. In June 1946, Hollywood Reporter announced that Leslie Brooks was set to play the role of "Carol Johnson." According to a July 1946 Hollywood Reporter news item, Columbia obtained special permission from the Treasury Department to photograph genuine and counterfeit money for use in the publicity and exploitation of the film, a practice normally prohibited in films. The Treasury Department also granted authority to the Secret Service to set up exhibitions in theater lobbies dealing with techniques of detecting counterfeit money.