The Unknown Terror 1957

Synopsis:

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.

Directed by: Charles Marquis Warren
Written by: Kenneth Higgins
Runtime: 76 minutes
Tagline: They dared enter the Cave of Death to explore the secrets of hell!
Cast:
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