Dr. John Fielding
John Merivale
Ellen Fielding
Didi Sullivan
Nieto
Arturo Dominici
Mexican at police station (uncredited)
Mario Bava
Narrator (voice)
Renzo Palmer
Prof. John Fielding (voice)
Leslie Daniels
Renato De Carmine
Max Gunther (voice)
Stefano Sibaldi
Prof. Rodriguez (voice)
Michele Malaspina
Bob (voice)
Rolf Tasna
Max Gunther
Gérard Herter
Linda
Daniela Rocca
Prof. Rodriguez
Vittorio André
Bob
Daniele Vargas
Police Inspector
Nerio Bernardi
Prof. Rodriguez's Assistant
Giacomo Rossi Stuart
Indian Dancer
Gail Pearl
Astronomo
Tom Felleghy
Director of Photography
Special Effects
Co-Director
Original Music Composer
Roman Vlad
Director
Riccardo Freda
Writer
Sound Effects
Carlo Rustichelli
Production Manager
Massimo De Rita
Filippo Sanjust
Producer
Sam Schneider
Bruno Vailati
Editor
Salvatore Billitteri
Roberto Nicolosi
Mario Serandrei
Executive Producer
Lionello Santi
Sound Recordist
Maurice Rosenblum
Gaffer
Antonio Rinaldi
Assistant Director
Odoardo Fiory
Costume Design