The Unknown Terror
“They dared enter the Cave of Death to explore the secrets of hell!”
We checked 8 streaming services in India on 08 Jun 2026 at 01:21 IST
About
A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants.
Cast
John Howard
as Dan Matthews
Mala Powers
as Gina Matthews
Paul Richards
as Peter Morgan
May Wynn
as Concha Ramsey
Gerald Milton
as Dr. Ramsey
Duane Grey
as Lino
Richard Gilden
as Raoul Koom
Martín Garralaga
as Lead Villager
Patrick O'Moore
as Dr. Willoughby
William Hamel
as Mr. Trainor
Charles Grey
as Jim Wheatley / ?The Monster Man
Charles Postal
as Higgs (butler)
Sir Lancelot
as Sir Lancelot
Charles Cirillo
as Native (uncredited)
Jim Whitecloud
as Native (uncredited)
Foster Hood
as Native (uncredited)
Where does The Unknown Terror rank today?
The Unknown Terror is #10000 on the CineFlixo Daily Streaming Charts today.
- Highest: #10000
- Top 10: 0 days
- Top 100: 0 days
Watch The Unknown Terror Online Free in HD
Stream The Unknown Terror online free in HD on CineFlixo. A talked-about horror movie originally produced in Inglés and released in 1957, it's earned a solid 5.3/10 from 16 viewers worldwide.
About The Unknown Terror
“They dared enter the Cave of Death to explore the secrets of hell!”
A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants. Running 76 minutes.
The Unknown Terror Cast and Characters
The cast features John Howard (as Dan Matthews), Mala Powers (as Gina Matthews), Paul Richards (as Peter Morgan), May Wynn (as Concha Ramsey), and Gerald Milton (as Dr. Ramsey). Their performances are a major reason The Unknown Terror has built such a passionate audience.
Where to Watch The Unknown Terror Online
On CineFlixo you can watch The Unknown Terror free — no account, no credit card, no ads in the middle of the show. We stream the full film in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch The Unknown Terror NowWhy People Are Watching The Unknown Terror
The Unknown Terror flies under the radar but it deserves your attention. What makes it work is a tone and style that's hard to find elsewhere. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about The Unknown Terror
Where can I watch The Unknown Terror online for free?
You can watch The Unknown Terror online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is The Unknown Terror?
The Unknown Terror runs for 76 minutes (about 1.3 hour).
Is The Unknown Terror good? What's the rating?
The Unknown Terror holds a 5.3/10 rating based on 16 reviews — a niche pick worth checking out.
Who is in the cast of The Unknown Terror?
The main cast includes John Howard, Mala Powers, Paul Richards, and May Wynn, plus a strong supporting ensemble.
Is The Unknown Terror available in Inglés?
Yes — The Unknown Terror was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was The Unknown Terror released?
The Unknown Terror was released in 1957.
Do I need an account to watch The Unknown Terror on CineFlixo?
No. CineFlixo is free and you can watch The Unknown Terror without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed The Unknown Terror, check out Swamp Woman, Never Blink, Deliria, Re-Animator, and Witchcraft (Evil Encounters).
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Frequently Asked Questions
Common questions about The Unknown Terror
Where can I watch The Unknown Terror for free?
You can watch The Unknown Terror (1957) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is The Unknown Terror about?
The Unknown Terror is a Horror English-language film. A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants.
When was The Unknown Terror released?
The Unknown Terror was released on August 12, 1957. It has a runtime of 1h 16m. The film was produced by Emirau Productions.
Who stars in The Unknown Terror?
The Unknown Terror stars John Howard, Mala Powers, Paul Richards and May Wynn. The full cast list is available in the Cast section above.
Is The Unknown Terror available in HD?
Yes, The Unknown Terror is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.