Reparto 18

1. 

   John Merivale

   Dr. John Fielding

2. 

   Didi Sullivan

   Ellen Fielding

3. 

   Gérard Herter

   Max Gunther

4. 

   Daniela Rocca

   Linda

5. 

   Vittorio André

   Prof. Rodriguez

6. 

   Daniele Vargas

   Bob

7. 

   Nerio Bernardi

   Police Inspector

8. 

   Giacomo Rossi Stuart

   Prof. Rodriguez's Assistant

9. 

   Gail Pearl

   Indian Dancer

10. 

    Tom Felleghy

    Astronomo

11. 

    Arturo Dominici

    Nieto

12. 

    Mario Bava

    Mexican at police station (uncredited)

13. 

    Renzo Palmer

    Narrator (voice)

14. 

    Leslie Daniels

    Prof. John Fielding (voice)

15. 

    Renato De Carmine

    Prof. John Fielding (voice)

16. 

    Stefano Sibaldi

    Max Gunther (voice)

17. Michele Malaspina

    Prof. Rodriguez (voice)

18. Rolf Tasna

    Bob (voice)

Equipo 19