Cast 21

1. 

   Boris Karloff

   Dr. Leon Kravaal

2. 

   Roger Pryor

   Dr. Tim Mason

3. 

   Jo Ann Sayers

   Nurse Judith Blair

4. 

   Stanley Brown

   Bob Adams

5. 

   John Dilson

   John Hawthorne

6. 

   Hal Taliaferro

   Sheriff Stanton

7. 

   Byron Foulger

   Dr. Bassett

8. 

   Charles Trowbridge

   Dr. Harvey

9. 

   Ernie Adams

   Pete Daggett

10. 

    Minta Durfee

    Frozen Therapy Patient (uncredited)

11. Charles Miller

    Doctor Spectator Explaining Procedure (uncredited)

12. 

    Eddie Dew

    Doctor Spectator Listening to Explanation (uncredited)

13. James Conaty

    Doctor Spectator (uncredited)

14. 

    Wedgwood Nowell

    Doctor Spectator (uncredited)

15. 

    Cyril Ring

    Doctor Spectator (uncredited)

16. William Marion

    Doctor Spectator (uncredited)

17. 

    Landers Stevens

    Doctor Spectator (uncredited)

18. 

    Ivan Miller

    Sheriff Haley (uncredited)

19. 

    Bruce Bennett

    State Trooper (uncredited)

20. 

    Charles Halton

    Doctor in Front Row in Final Scene (uncredited)

21. 

    Lee Willard

    Frozen Body of Jasper Adams (uncredited)

Crew 17