This film, along with his previous post-war picture, Gilda (1946), relaunched Glenn Ford's career after spending two years in the U.S. Marines during World War II.
Many of the Oscar-nominated special effects pioneered by this film were later employed on similar projects requiring actors to play their own twins, including the Hayley Mills version of "The Parent Trap", ABC's "The Patty Duke Show" and Bette Davis' unofficial remake of "A Stolen Life", 1964's "Dead Ringer".
First film of Bette Davis as a producer under her new contract with Warner Brothers. (Note the "A B.D. Production" in the opening credits.) Davis left the day-to-day work of producing the film to others, but she did choose this project, and hired the writer and director.
This film's special visual effects, which allowed two images of Bette Davis to seamlessly appear in a single frame and carry on conversations with one another, were nominated for an Academy Award, but lost out to the ethereal fantasy "Blithe Spirit".
Out of gratitude for Bette Davis having "gone to bat for him" to be her co-star in this film, Glenn Ford claimed that he repaid the favor by insisting director Frank Capra cast Davis as Apple Annie when he starred in "Pocketful of Miracles" in 1961. In "Bette Davis Speaks" by Boze Hadleigh, she insists that she got the part without Ford's influence, and she singled out Ford for vitriol.