He's Trained His Brood of Blood-Hungry Bats to Kill on Command!
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.
Director: Jean Yarbrough
Screenplay: John T. Neville
Director of Photography: Arthur Martinelli
Producer: Jack Gallagher
Dr. Paul Carruthers
Mary Heath
Johnny Layton
Henry Morton
Maxine
'One-Shot' McGuire
Martin Heath
Don Morton
The Devil Bat 1940 Trailer