Sherlock Holmes
Reginald Owen
Mrs. Pyke
Anna May Wong
Daffy Dolly
Leila Bennett
Capt. Robin S. Pyke
Wyndham Standing
Malcolm Dearing
Halliwell Hobbes
Lestrade
Alan Mowbray
Dr. Watson
Warburton Gamble
Eileen Forrester
June Clyde
John Stanford
John Warburton
Mrs. Annabel Mary Murphy
Doris Lloyd
Jabez Wilson
J.M. Kerrigan
Merrydew
Alan Dinehart
Will Swallow
Billy Bevan
Director of Photography
Arthur Edeson
Director
Edwin L. Marin
Novel
Arthur Conan Doyle
Screenplay
Robert Florey
Dialogue
Editor
Rose Loewinger
Sound Engineer
Hans Weeren
Supervising Film Editor
Martin G. Cohn
Music
Val Burton
Settings
Ralph M. DeLacy