Originally intended to be a television series pilot, this movie was shown on television as a movie-of-the-week, and released theatrically overseas.
In Brazil, the film is dramatically titled as A Satânica Madame Sin, literally translated to english as The Satanic Madame Sin, although nor Satan, his cult and worshipers are part of the plot, giving to the film a weird horror connotation for many years. Most recently the brazilian title was changed to Madame Sinistra, literally translated as Sinister Madam.
Reportedly, this camp spy spoof was apparently influential in actor Robert Wagner being cast as Number Two in the later ''Austin Powers'' film franchise.
Bette Davis previously played another ''madame'' titled character, as Madame Elizabeth McQueeny, in the televisions series Wagon Train (1957).