Director/a
Alberto De Martino
DIRECTOR/A
Sergio Grieco
Reparto (por orden de créditos)
Ken Clark
Dick Malloy
Daniela Bianchi
Lady Arabella Chaplin
Helga Liné
Hilde
Jacques Bergerac
Kobre Zoltan
Mabel Karr
Jacqueline
Alfredo Mayo
Sir Hillary
Philippe Hersent
Heston
Evelyn Stewart
Constance Day
Tomás Blanco
Commissario Soler
José Panizo
ACTOR
Peter Blades
Ivan
Rafael Albaicín
Rodriguez - the false monk
Raymond Jourdan
Scientist
Alberto Cevenini
English soldier
Silvana Bacci
Congress Attendee(uncredited)
Agustín Bescos
Birthday Party Guest(uncredited)
Rufino Inglés
Doctor(uncredited)
Álvaro Marenco
Attendant(uncredited)