Top cast
Soledad Miranda
Mrs. Johnson
Fred Williams
Dr. Johnson
Paul Müller
Dr. Franklin Houston
Ewa Strömberg
Dr. Crawford
Howard Vernon
Prof. Jonathan Walker
Jesús Franco
Dr. Donen
Horst Tappert
Inspector
Beni Cardoso
Mrs. Donen
Germán Robles
Policeman
Rudolf Hertzog
Member of Medical Congress
Karl Heinz Mannchen
Member of Medical Congress
Directed by
Jesús Franco
Written by
Jesús Franco
Produced by
Artur Brauner, Arturo Marcos
