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The Unknown Terror · Movie Vault
LibraryThe Unknown Terror
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The Unknown Terror

19571h 16m5.2/ 10 · TMDB · 16 votes
Horror

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.

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Directed by Charles Marquis Warren

Our screenings

A
Ansh Kapoor

No screenings recorded

Unwatched

The people behind the story

John Howard
John Howard

Dan Matthews

Mala Powers
Mala Powers

Gina Matthews

Paul Richards
Paul Richards

Peter Morgan

May Wynn
May Wynn

Concha Ramsey

Gerald Milton
Gerald Milton

Dr. Ramsey

Duane Grey
Duane Grey

Lino

Richard Gilden
Richard Gilden

Raoul Koom

Martín Garralaga
Martín Garralaga

Lead Villager

Patrick O'Moore
Patrick O'Moore

Dr. Willoughby

William Hamel

Mr. Trainor

Where to watch

Streaming availability is not currently listed for India. Listings may be incomplete.

Last checked 9 Oct 2026.

Availability data by JustWatch via TMDB. Confirm availability with the service.

In these collections

This film has not joined a collection yet.

Film details

Released12 Aug 1957
Original languageEnglish
CountriesUnited States of America
View on TMDB
Charles Grey

Jim Wheatley / ?The Monster Man

Charles Postal

Higgs (butler)