The Unknown Terror (1957)

Unrated  |   |  Horror, Sci-Fi  |  12 August 1957 (USA)
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Reviews: 8 user | 4 critic

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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Cast overview:
Gina Matthews
Peter Morgan
May Wynn ...
Concha Ramsey
Gerald Milton ...
Dr. Ramsey
Duane Grey ...
Lino (as Duane Gray)
Richard Gilden ...
Raoul Koom
Martin Garralaga ...
Old Native Villager
Patrick O'Moore ...
Dr. Willoughby
William Hamel ...
Mr. Trainer
Charles H. Gray ...
Jim Wheatley (as Charles Gray)
Charles Postal ...
Higgs, the butler
Sir Lancelot ...


The mysterious disappearance of Jim Wheatley (Charles Gray), while exploring a cave near a Mexican village, brings his sister, Gina (Mala Powers), and her husband, Dan Matthews (John Howard), to the territory to search for him. Embittered, crippled Pete Morgan (Paul Richards), insists on going along and reminds Dan that his condition is Dan's fault since it happened in an accident in which Pete saved Dan's life. Plus, Gina was Pete's sweetheart before the accident. Did we mention embittered? The party hears about an old Indian legend concerning the Cave of the Dead where human sacrifices were made to the Gods. Dr. Ramsey (Gerald Milton), married to a native girl, Concha (May Wynn), claims no knowledge of the cave, but he is here because the climate is ideal for rapid fungus growth for his work on cultivating fungus for antibiotics. You don't have to be from France to know that if the climate is good for fungus growth, a cave is even better but it takes Dan and Pete a while to get ... Written by Les Adams <>

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Plot Keywords:

sister | scientist | monster | jungle | See All (4) »


They dared enter the Cave of Death to explore the secrets of hell!


Horror | Sci-Fi


Unrated | See all certifications »




Release Date:

12 August 1957 (USA)  »

Also Known As:

Beyond Terror  »

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Sound Mix:

Aspect Ratio:

2.35 : 1
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User Reviews

Fungus Among Us
5 October 2000 | by (in a cave) – See all my reviews

I was able to acquire a copy of this little flick recently.I remembered it from my youth but still had some trepidation due to all of the snooty reviews of the flick.Well ol' evilskip is here to tell you that it isn't nearly as bad as it has been touted.

An expedition is lost somewhere in South America near the cave of death.Well a second expedition is mounted to find the first. Before long we've got some nasty looking zombies and a mad scientist who has created an unstoppable killer fungus.Granted, the fungus looks like it came from a dish washer with an overactive thyroid but what could you do with $12 for special effects?>

Again this isn't a classic by any means.But in the right frame of mind it is a pleasant way to pass 70 or so minutes.

13 of 15 people found this review helpful.  Was this review helpful to you?

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