By the thinnest of plot connections in Supernatural is millionaire heiress Carole Lombard connected to Vivienne Osbourne a serial murderess who is awaiting her execution in prison. Alan Dinehart, Osbourne's sometime boyfriend is the one who turned her in to the authorities because he was afraid. With good reason as it turns out.
Dinehart is a fake medium, but H.B. Warner is the real deal, a psychologist studying life after death. He wants Osbourne's body after she dies for experimentation and she agrees to it.
Turns out he's a family friend of Carole Lombard who is mourning the recent death of her brother, leaving her sole heir to a vast fortune. And Dinehart has designs on it through her.
Warner has the best performance in this film. His scientist is part Dr. Frankenstein and part Dr. Van Helsing, the best parts of both. Closely following is Dinehart who is definitely one scurvy rat.
Lombard did far better work in her career in those screwball comedies than she does her as a frightened heiress who gets possessed by the spirit of a killer. Supposedly a female serial killer has not been identified, but apparently Supernatural anticipates one will eventually be found.
Randolph Scott plays Lombard's boyfriend. He was doing B westerns for Paramount at the time, based on Zane Grey stories mostly. He looks like he'd rather be back in the saddle than in the tuxedo he wears mostly in this film. Of course his part is colorless and he's given little to do, but look concerned.
Not the best work for fans of either Carole Lombard or Randolph Scott.