The Unknown Terror
1957, English. Directed by Charles Marquis Warren.
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.
- Runtime
- 1h 16m
- Post-credits
- None listed
- Language
- English
- Rated
- Check local
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Where to watch The Unknown Terror
The Unknown Terror isn’t streaming on any OTT platform in India yet; it released on 12 August 1957.
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Cast & crew
- Charles Marquis WarrenDirector
- John HowardDan Matthews
- Mala PowersGina Matthews
- Paul RichardsPeter Morgan
- May WynnConcha Ramsey
- Gerald MiltonDr. Ramsey
- Duane GreyLino
- Richard GildenRaoul Koom
- Martín GarralagaLead Villager
- Patrick O'MooreDr. Willoughby
- William HamelMr. Trainor
- Charles GreyJim Wheatley / ?The Monster Man
- Charles PostalHiggs (butler)
Details
- Released
- 12 August 1957
- Country
- United States of America
- Written by
- Kenneth Higgins
Check ratings elsewhere
News & fan talk
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The Unknown Terror: quick answers
Is The Unknown Terror worth watching?
The Unknown Terror doesn’t have enough ratings for a verdict yet.
How long is The Unknown Terror?
The Unknown Terror runs 76 minutes (1h 16m).
Does The Unknown Terror have a post-credits scene?
None is listed for The Unknown Terror. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
The Unknown Terror parents guide: is it suitable for kids?
No age rating is listed for The Unknown Terror yet.
Which OTT platform is The Unknown Terror on?
The Unknown Terror isn’t streaming on any OTT platform in India yet; it released on 12 August 1957. (Checked 9 November 2026.)
What movies are like The Unknown Terror?
If you liked The Unknown Terror, try Beware Boiúna, Creature from the Black Lagoon, Annihilation.
Who directed The Unknown Terror?
The Unknown Terror (1957) was directed by Charles Marquis Warren and stars John Howard, Mala Powers, Paul Richards.