출연진 18

1. 

   Paul Stevens

   Doctor Allan Barnes

2. 

   Claudette Nevins

   Pam Albright

3. 

   Anne Collings

   Miss Goodrich

4. Bill Walker

   Lieutenant Martin

5. 

   Martin Lavut

   Michael Radin

6. Leo Leyden

   Doctor Soames

7. Norman Ettlinger

   Professor Quincey

8. W.B. Brydon

   Anderson (as Bill Bryden)

9. Jim Moran

   Jim Moran

10. Eleanor Beecroft

    Mrs. Kelly

11. Ray Lawlor

    Lab Technician

12. Rudi Linschoten

    Mime in Nightmare

13. Stephen Ker Appleby

    Museum Guide (as Steven Appleby)

14. Alfie Scopp

15. Paul Elsom

16. Harry Blackstone

    Self (in introduction added to video version) (uncredited)

17. Nancy Island

    Girl Who Is Killed (uncredited)

18. Paul Nevens

    Demon of the Mask (uncredited)

제작진 20