The Unknown Terror
4.8
“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.
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Not streaming anywhere
Not on any streaming service in United States, and not available to rent.
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Cast
16 people
John Howard
Dan Matthews
Known for
The Philadelphia Story
Lost Horizon
Mala Powers
Gina Matthews
Known for
Outrage
Cyrano de Bergerac
Paul Richards
Peter Morgan
Known for
Beneath the Planet of the Apes
The St. Valentine's Day Massacre
May Wynn
Concha Ramsey
Known for
The Violent Men
Gerald Milton
Dr. Ramsey
Known for
Forty Guns
Underworld U.S.A.
Duane Grey
Lino
Known for
Charro!
Richard Gilden
Raoul Koom
Also in
The Black Klansman
Lost, Lonely and Vicious
Martín Garralaga
Lead Villager
Known for
Lonely are the Brave
The Left Handed Gun
Patrick O'Moore
Dr. Willoughby
Known for
The Mechanic
Sahara
William Hamel
Mr. Trainor
Also in
Hellgate
Copper Sky
Charles Grey
Jim Wheatley / ?The Monster Man
Charles Postal
Higgs (butler)
Also in
Death in Small Doses
Highway Patrol
Charles Marquis Warren Director · Kenneth Higgins Writer Raoul Kraushaar Composer
United States release August 12, 1957 · Produced in United States · Production Regal Films, 20th Century Studios
Production
Emirau Productions
Production
Regal Films
Production
20th Century Studios
Studio
United States
Produced in
Languages
Original language
English
Spoken on screen
English
Release dates
United States · August 12, 1957
Theatrical · Distributed by 20th Century Fox Film Corp.
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