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.
as Dr. Paul Carruthers
as Mary Heath
as Johnny Layton
as Henry Morton
as Maxine
as 'One-Shot' McGuire
as Martin Heath
as Don Morton
as Tommy Heath
as Roy Heath
as Joe McGinty
as Chief Wilkins
as Prof. Percival Garland Raines
as Coroner (scenes deleted)
as Walter King
