20 Jul 1964
FBI Operation Yellow Viper
The secret agent Claus van Dongen is sent to Cape Town to end the activities of the criminal organization Yellow Viper.
Agent X1-7
A Scientist that developed a formula to increase the world's food supply, is captured by enemies that don't want this to happen. George Collins, Agent X 1-7 is assigned to rescue him from a castle where he is held hostage.
Top Billed Cast
Lang Jeffries George Collins
Aurora de Alba Olga
Rafael Bardem Professor Calvert
Eleonora Bianchi 
Gloria Fernán Osuna Wladimiro Tuicovich Ángel Jordán 
Moa Tahi 
Joe Kamel Nando Angelini 
Gianni Solaro C.I.A. Manager
Aldo Bonamano Andrea Scandurra 
Rocco Lerro A lab guardian (uncredited)
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