Top Billed Cast

1. 

   Stephen Forsyth

   John Harrington

2. 

   Dagmar Lassander

   Helen Wood

3. 

   Laura Betti

   Mildred Harrington

4. 

   Jesús Puente

   Inspector Russell (as Jesus Puente)

5. 

   Femi Benussi

   Alice Norton

6. 

   Antonia Mas

   Louise

7. 

   Luciano Pigozzi

   Vences (as Alan Collin)

8. 

   Gérard Tichy

   Dr. Kalleway (as Gerard Tichy)

9. 

   Verónica Llimerá

   Betsy Wester (as Veronica Llimera)

10. 

    Pasquale Fortunato

    John Harrington as a Boy (as Fortunato Pascuale)

11. 

    Ignasi Abadal

    Jimmy Kane (as José Ignacio Abadaz)

12. 

    Silvia Lienas

    Vicky

13. 

    Montserrat Riba Vidal

    Rosy Miller (as Monserrat Riba)

14. 

    Susy Andersen

    Sdenka (archive footage) (uncredited)

15. 

    Guido Barlocci

    Unknown (uncredited)

16. 

    Bruno Boschetti

    Policeman (uncredited)

17. 

    Elina De Witt

    Model (uncredited)

18. 

    Rika Dialina

    Maria (archive footage) (uncredited)

19. 

    Boris Karloff

    Gorca (archive footage)

20. 

    Glauco Onorato

    Giorgio (archive footage) (uncredited)