Age-restricted? YouTube often blocks those trailers inside other sites. Use the button to watch on YouTube — you may need to sign in and confirm your age.
Watch on YouTubeTrailer from TMDb metadata; playback via YouTube. If the player shows a restriction, use "Watch on YouTube" above.
Community reviews
From TMDb members · 1 total- Tourma9/10
**Peak Classic Universal Horror** A bunch of big stars with a well written story, for the time. Bela Lugosi and Boris Karloff are both great and so is Francis Drake. CW: There are racist bits, typical portrayals of Africans for the time period. So watch out for that.
Full text & links on TMDb in the reviews section below.
Your rating
Where to stream
Region US. Update where you watch
Rent, buy & download
Amazon Video
Apple TV Store
Google Play Movies
YouTube
Fandango At Home
Opens partner listings via The Movie Database — not affiliated with WatchMind.
The Invisible Ray
“Delving into new, strange fields of mystery!”
64%
Movie
1h 19m
AI Analysis
The Invisible Ray (1936) — AI movie analysis
WatchMind AI generated this AI analysis of The Invisible Ray (1936) — a movie tagged as Science Fiction, Horror, and Thriller with dark and tense moods and fast-paced pacing.
Story & themes: Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his ow… 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 (~79 min).
Community signal: TMDb members rate The Invisible Ray 64% (60 votes) — solid community ratings for this movie.
AI verdict
The Invisible Ray suits viewers who want a dark and tense 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.
Insights
Audience & engagement
How WatchMind visitors interact with this title — views, saves, sentiment, and taste match when you're signed in, or a device preview while browsing. Aggregates are anonymous; last 30 days.
Early data — charts fill in as more people explore this title.
TMDb audience score
64%
from 60 TMDb votes
WatchMind sentiment
No thumbs or dismissals yet. Rate this title to help others see likeness trends.
- Dismissals
- 0
Engagement breakdown
0 unique visitors · no audience notes yet
Views trend (14 days)
Daily title page views on WatchMind
Synopsis
Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his own poisoned body as a weapon to kill.
Quick facts
- Type
- Movie
- Status
- Released
- Release date
- 1936-01-20
- Runtime
- 1h 19m
- TMDB rating
- 6.4
- TMDB ID
- 27918
Watch & discovery tips
- Read TMDb member reviews in the reviews section, and audience tips from other WatchMind visitors in Audience notes.
- Use Rent, buy & download for official stores; offline viewing is usually inside their apps.
- Browse trending and top-rated movies from the main Movies page.
- Add titles to your watch queue from this page — order matters; the top pick can surface on your home page when you're logged into the same browser session.
Frequently asked questions
Where can I watch The Invisible Ray (1936)?
The Invisible Ray 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 Invisible Ray?
Yes, you can watch the official trailer for The Invisible Ray directly on this page. We pull the latest video metadata from TMDb and play it via YouTube integration.
What is The Invisible Ray about?
Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paran... This is the official synopsis available via TMDb community metadata.
Is there an AI analysis for The Invisible Ray?
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 Invisible Ray?
The official runtime for The Invisible Ray is approximately 79 minutes.
Cast & crew
Names and photos from The Movie Database (TMDb). Follow links on themoviedb.org for full filmographies.
Directors & writers
Cast
Boris Karloff
Dr. Janos Rukh
Bela Lugosi
Dr. Felix Benet
Frank Lawton
Ronald Drake
Frances Drake
Diana Rukh
Violet Kemble Cooper
Mother Rukh
Beulah Bondi
Lady Arabella Stevens
Walter Kingsford
Sir Francis Stevens
Paul Weigel
Monsieur Noyer
Frank Reicher
Professor Meiklejohn
Georges Renavent
Chief of the Surete
May Beatty
Mme. LeGrand (uncredited)
Paul McAllister
Papa LaCosta (uncredited)
Nydia Westman
Briggs (uncredited)
Ynez Seabury
Celeste (uncredited)
Robert Graves
Gendarme (uncredited)
Audience notes
Quick tips, watch-order ideas, and “worth it?” takes from other WatchMind visitors — not from TMDb. Reply to continue a thread, tap Helpful to surface useful notes, and keep things kind — no spoilers in the first line when you can help it.
Discussion0 notes
No notes yet — be the first to leave a suggestion for the next viewer.
Community reviews
Written by TMDb members — same catalogue as our movie & TV metadata. API terms
**Peak Classic Universal Horror** A bunch of big stars with a well written story, for the time. Bela Lugosi and Boris Karloff are both great and so is Francis Drake. CW: There are racist bits, typical portrayals of Africans for the time period. So watch out for that.
More to explore
Hand-picked from TMDb similar and recommended lists for The Invisible Ray. Each link opens a full WatchMind page with synopsis, trailer, community reviews, and official store links—so you can compare tone and audience overlap before you pick what to watch next.
Open Grave
Horror · Mystery
Last Man Down
Action · Mystery
Doctor X
Horror · Mystery
Femme Fatale
Crime · Mystery
Man-Made Monster
Horror · Science Fiction
Daybreakers
Action · Fantasy
Lifeforce
Action · Horror
Black Box
Horror · Science Fiction
Alien: Covenant
Horror · Science Fiction
Die Alone
Horror · Science Fiction
Contagion of Fear
Science Fiction · Thriller
Polaroid
Horror · Mystery