
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