God help us if they rise again!
Young doctor Garondet is summoned by renowned Professor Orloff. At Orloff's castle, Garondet discovers that the mad scientist has created an invisible yet murderous apeman.
Howard Vernon
Professor Orloff
Brigitte Carva
Cécile Orloff
Fernando Sancho
The Game-Keeper
Paco Valladares
Dr. Garondet
Eugène Berthier
The Old Servant
Isabel del Río
Marie
Arlette Balkis
May Chartrette
Christian Forges
Evane Hanska
The Servant
