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Community reviews
From TMDb members · 2 total- John Chard6/10
Imbecile, Bombastic, Ignoramus. The Devil Bat is directed by Jean Yarbrough and written by George Bricker and John T. Neville. It stars Bela Lugosi, Suzanne Kaaren, Dave O’Brien, Donald Kerr and Gary Usher. The Heathville Horror! Straight out of Poverty Row is this…
- CinemaSerf6/10
OK, so almost all of the peril comes from a man out of shot careering about with a plastic bat on the end of a fishing rod, but somehow this daft sci-fi hokum makes a point. It's all about the rather shrewd scientist "Carruthers" (Bela Lugosi) who feels slighted by his pals who m…
Full text & links on TMDb in the reviews section below.
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The Devil Bat
“He's Trained His Brood of Blood-Hungry Bats to Kill on Command!”
53%
Movie
1h 8m
AI Analysis
The Devil Bat (1940) — AI movie analysis
WatchMind AI generated this AI analysis of The Devil Bat (1940) — a movie tagged as Horror, Science Fiction, and Crime with dark moods and fast-paced pacing.
Story & themes: 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 … Our models also surface themes such as ai and revenge from synopsis and genre signals.
Watch context: Best suited for solo focused viewing. Expect fast-paced storytelling (~68 min).
Community signal: TMDb members rate The Devil Bat 53% (87 votes) — mixed but watchable scores for this movie.
AI verdict
The Devil Bat suits viewers who want a dark film — check the trailer and reviews before committing a full evening.
Algorithmic AI analysis from genres, synopsis, pacing heuristics, and TMDb community scores — not a generative chatbot. How WatchMind works.
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TMDb audience score
53%
from 87 TMDb votes
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Synopsis
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.
Quick facts
- Type
- Movie
- Status
- Released
- Release date
- 1940-12-13
- Runtime
- 1h 8m
- TMDB rating
- 5.3
- TMDB ID
- 41021
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Frequently asked questions
Where can I watch The Devil Bat (1940)?
The Devil Bat is available for discovery on WatchMind. You can find official links to rent, buy, or stream from licensed digital stores like Apple TV and Amazon in our "Where to Watch" section.
Is there an official trailer for The Devil Bat?
Yes, you can watch the official trailer for The Devil Bat directly on this page. We pull the latest video metadata from TMDb and play it via YouTube integration.
What is The Devil Bat about?
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 twi... This is the official synopsis available via TMDb community metadata.
Is there an AI analysis for The Devil Bat?
Yes. WatchMind publishes an AI analysis on this page — tone, pacing, audience fit, and community scores from TMDb metadata and recommendation models (not a chatbot). Scroll to the AI Analysis section or read the meta description summary.
How long is the movie The Devil Bat?
The official runtime for The Devil Bat is approximately 68 minutes.
Cast & crew
Names and photos from The Movie Database (TMDb). Follow links on themoviedb.org for full filmographies.
Directors & writers
Cast

Bela Lugosi
Dr. Paul Carruthers

Suzanne Kaaren
Mary Heath

Dave O'Brien
Johnny Layton

Guy Usher
Henry Morton

Yolande Donlan
Maxine

Donald Kerr
'One-Shot' McGuire
- E
Edmund Mortimer
Martin Heath

Gene O'Donnell
Don Morton
- A
Alan Baldwin
Tommy Heath
- J
John Ellis
Roy Heath

Arthur Q. Bryan
Joe McGinty

Hal Price
Chief Wilkins

John Davidson
Prof. Percival Garland Raines
- B
Billy Griffith
Coroner (scenes deleted)
- W
Wally Rairden
Walter King
Audience notes
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Community reviews
Written by TMDb members — same catalogue as our movie & TV metadata. API terms
Imbecile, Bombastic, Ignoramus. The Devil Bat is directed by Jean Yarbrough and written by George Bricker and John T. Neville. It stars Bela Lugosi, Suzanne Kaaren, Dave O’Brien, Donald Kerr and Gary Usher. The Heathville Horror! Straight out of Poverty Row is this PRC production that’s as bonkers as it is fun. Plot sees Lugosi as a fed up cosmetic chemist who decides that the company he provides his inventions for have not done right by him financially. So in his secret laboratory at home he breeds big killer bats, bats that he rears to kill anyone wearing the scent of aftershave lotion that he has handed out to the targets of his ire. As the bodies begin to mount up and the press whip up a devil bat on the loose storm, journalists Henry Layden (O’Brien) and “One Shot McGuire” close in on the source of the town’s terror. The low budget is often evident, be it props and sets that shouldn’t move etc, but at just over an hour in length this gets in and does its job with a sort of carefree abandon that is to be admired. Lugosi is having fun shifting from borderline mania to crafty dastard with a sense of humour, and of course there are big scary bats that shriek before homing in for the girl. Result! The flaws are obvious throughout, not least that Lugosi ends up playing second fiddle to the journalists’ blend of bravado and buffoonery, but as time fillers go, and as Lugosi’s Poverty Row Horrors go, this is impossible to dislike and not have a good time with. 6/10
OK, so almost all of the peril comes from a man out of shot careering about with a plastic bat on the end of a fishing rod, but somehow this daft sci-fi hokum makes a point. It's all about the rather shrewd scientist "Carruthers" (Bela Lugosi) who feels slighted by his pals who made a load of long-term cash from an invention that he took the quick buck from. By way of exacting his cunning revenge, he has devised a formula that purports to be an after shave but is actually toxically attractive to a giant bat. Suffice to say, nobody survives their encounter for long and so soon both the police and the press are trying to get to the bottom of things as the corpses pile up. The rest of this is all standard drive-in fayre, but I did rather like the swipe it took at the pomposity of scientists who simply make things up when they don't know the facts. Of course, it's basic from start to finish but Lugosi keeps this adequately cast little beastie caper running along smoothy for quite an entertaining hour.
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