Artur Brauner
Producer Arturo Marcos
Producer Jesús Franco
Director

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

Jesús Franco
Writer Manuel Merino
Director of Photography Clarissa Ambach
Editor Manfred Hübler
Original Music Composer Sigi Schwab
Original Music Composer Bruno Nicolai
Original Music Composer