Cast 24

1. 

   Donald Pleasence

   Dr. Hawley Harvey Crippen

2. 

   Coral Browne

   Belle Crippen

3. 

   Samantha Eggar

   Ethel Le Neve

4. 

   Donald Wolfit

   R.D. Muir (as Sir Donald Wolfit)

5. 

   James Robertson Justice

   Captain McKenzie

6. 

   Geoffrey Toone

   Mr. Tobin

7. Douglas Bradley-Smith

   Dr. Pepper

8. 

   Olga Lindo

   Mrs. Clara Arditti

9. Elspeth March

   Mrs. Jackson

10. 

    Paul Carpenter

    Bruce Martin

11. 

    John Arnatt

    Chief Inspector Dew

12. 

    Oliver Johnston

    Lord Chief Justice

13. 

    John Lee

    Harry

14. 

    Edward Underdown

    The Governor

15. 

    Hamilton Dyce

    Dr. Rogers

16. 

    Basil Henson

    Mr. Arditti

17. 

    Totti Truman Taylor

    Miss Curnow

18. Edward Cast

    Harding

19. Colin Rix

    Chemist

20. Terence Brook

    Police Sergeant Outside Courtroom (uncredited)

21. Eric Dodson

    Defence QC Clerk (uncredited)

22. 

    Max Faulkner

    Radio Officer Andrews (uncredited)

23. 

    Guy Standeven

    Ships Steward (uncredited)

24. John Tatham

    Courtroom Spectator (uncredited)

Crew 12