The Devil Bat

Dr. Paul Carruthers is frustrated because he thinks his employers, Mary Heath and Henry Morton, have cheated him out of the company's profits. He decides to get revenge by altering bats to grow twice their normal size and training them to attack when they smell a perfume of his own making. He mixes the perfume into a lotion, which he offers as a gift to Mary and Henry. When they turn up dead, a newspaper reporter decides to investigate.

• Jean YarbroughDirector
• John T. NevilleScreenplay

• Bela LugosiDr. Paul Carruthers
• Suzanne KaarenMary Heath
• Dave O'BrienJohnny Layton
• Guy UsherHenry Morton
• Yolande DonlanMaxine
• Donald Kerr'One-Shot' McGuire
• Edmund MortimerMartin Heath
• Gene O'DonnellDon Morton
• Alan BaldwinTommy Heath
• John EllisRoy Heath
• Arthur Q. BryanJoe McGinty
• Hal PriceChief Wilkins