Cast 22

1. 

   Basil Rathbone

   Sherlock Holmes

2. 

   Nigel Bruce

   Dr. John Watson

3. 

   Hillary Brooke

   Lydia Marlowe

4. 

   Henry Daniell

   Professor James Moriarty

5. 

   Paul Cavanagh

   Sir George Fenwick

6. 

   Matthew Boulton

   Inspector Gregson

7. 

   Eve Amber

   Maude Fenwick

8. 

   Frederick Worlock

   Dr. Onslow

9. Percival Vivian

   Dr. Simnell

10. 

    Coulter Irwin

    Corporal Williams

11. 

    Sally Shepherd

    Crandon

12. 

    Mary Gordon

    Mrs. Hudson

13. John Burton

    Waring the Mesmerist (uncredited)

14. Harold De Becker

    Shoelace Vendor Henchman (uncredited)

15. Tony Ellis

    Carter the Hypnotized Subject (uncredited)

16. 

    Bess Flowers

    Bar Patron (seen in mirror) (uncredited)

17. 

    Kay Harding

    4th Victim (uncredited)

18. Alec Harford

    Commissioner of the CID (uncredited)

19. 

    Olaf Hytten

    Fenwick's Butler Norris (uncredited)

20. 

    Boyd Irwin

    Short-Tempered Officer Closing Window (uncredited)

21. 

    Eric Mayne

    Member of Mesmer Club (uncredited)

22. 

    William H. O'Brien

    Pembrook House Waiter (uncredited)

Crew 16