• 
  Anita Ekberg

  Madame Colette
• 
  Barbara Bouchet

  Francine
• 
  Howard Vernon

  Professor Waldemar
• 
  Gordon Mitchell

  Man in Nightclub
• 
  Pietro Martellanza

  Antoine Gottvalles
• 
  Robert Sacchi

  Inspector Pontaine

• 
  Bruno Mattei

  montaj
• 
  Carlo Rambaldi

  special effects