The tagline for this film is, "A good woman -- A bad woman -- He needed the love of both!"
The full credits listing for this film at IMDB lists forty-five additional actors who are all uncredited. As they are not credited in the film, and their involvement in this project cannot be verified, they will not be listed here.
The movie was shot at MGM Studios at 10202 W. Washington Boulevard in Culver City, California. 
Paul Osborn contributed to the writing of this film, but was uncredited for his participation.
Actor Frederick Worlock is credited as Frederic Worlock in this film. To be clear, just because his last name is similar to that of "warlock" does not mean that he actually was a warlock. Conversely, it also doesn't mean that he was not a warlock.
There are a total of sixty-three characters featured in this film, eighteen of which are credited in the film itself. Of those eighteen, sixteen are named characters.