Top Billed Cast

1. 

   John Miljan

   Dr. Jones

2. 

   Boyd Crawford

   Dr. Bates / William Wilson

3. 

   Robert Middlemass

   Hartney Drew

4. 

   Claire Du Brey

   Dr. Jones' Nurse Hazel

5. 

   Clem Bevans

   Mr. Greene (uncredited)

6. 

   Victor Kilian

   Jack Saunders (uncredited)

7. 

   Ruth Robinson

   Mrs. Saunders (uncredited)

8. 

   E. Alyn Warren

   Dr. Turner (as Fred Warren)

9. 

   Barbara Bedford

   Miss Grant (uncredited)

10. 

    Frederick Vogeding

    Dr. Jones' Viennese Associate (uncredited)

11. 

    James Flavin

    Cop (uncredited)

12. 

    Naomi Childers

    Patient (uncredited)