I liked "Supernatural" (1933) a lot. I'd rate it close to 7.5/10 if I could. It doesn't quite fire on all cylinders but it comes close. This is correctly termed a horror story in that it has a strong supernatural component to the story, but old horror stories from the 30s are not done like modern ones. They depend much more on the psychological and mysterious. They rely more on science and the unknown spiritual. Modern horror stories depend more on shock, deaths, blood and scares.
After the credits and some newspaper background, there is an eye-catching montage of the murderess (Vivienne Osborne) who's headed for execution very shortly. She calls out for Paul Bavian (Alan Dinehart) to visit her and wonders why he hasn't. Then the groundwork is laid for the supernatural when a staid and serious doctor (H.B. Warner) convinces the warden (Willard Robertson) to allow him to experiment on the body of the executed Osborne. First they have to persuade her to agree, and that makes for an interesting scene.
Carole Lombard's twin brother was one of several victims and Dinehart, who is a medium, approaches her with the possibility of a seance and communication with her dead brother. Randolph Scott, Lombard's boy friend, and Warner try to dissuade her, to no avail. Dinehart is a fake and his landlady, Beryl Mercer, knows it.
The story builds nicely from this foundation. The cinematography and staging are at times striking. Lombard does a great job, in my view, not just an average job. When the camera moves in for her closeups, she delivers. Vivienne Osborne has her moments too. Dinehart plays the role of a smooth operator and manipulator perfectly. He's cunning, devious and ruthless.
This could easily be called pre-noir unless one thinks that the supernatural element nixes that. The story is dark enough to be something beyond a conventional mystery.
Producer Edward Halperin and his brother, director Victor Halperin, had also done "White Zombie" (1932), another horror movie in a noirish vein. Victor Helperin later directed "Torture Ship" (1939) and "Buried Alive" (1939), which I haven't watched yet.