Cast 11

1. 

   Boris Karloff

   Dr. Victor Sartorius

2. 

   Joan Wyndham

   Eve Rowe

3. 

   Arthur Margetson

   Roger Clifford

4. 

   Mona Goya

   Yvonne Clifford

5. 

   Anthony Ireland

   Capt. Arthur Halliday

6. 

   Morton Selten

   Sir Charles Clifford

7. Nina Boucicault

   Mary Clifford

8. 

   Gibb McLaughlin

   Jacques

9. 

   J.H. Roberts

   Chalmers

10. 

    Victor Rietti

    Doctor Bousquet

11. Wilfrid Caithness

    Morrocan Official

Crew 12