In The Devil's Saint, the narrative unfolds against the vibrant backdrop of a fancy dress ball in Paris, 1927, where the atmosphere is thick with intrigue and hidden agendas. The story is introduced by the ominous 'Man in Black,' who sets the stage for a tale steeped in suspense and dark familial secrets. Count Stefan Kahari, portrayed by Peter Lorre, is a sinister nobleman with a controlling grip on his niece, Elona. As the ball progresses, Elona's suitor, Edward Whiteford, a young English officer, is determined to confront the count about his intentions toward Elona. Their relationship, however, is fraught with tension, as Elona reveals her uncle's eccentricities and the oppressive nature of his guardianship.