Reginald Owen

Sherlock Holmes

June Clyde

Eileen Forrester

Alan Mowbray

Lestrade

Warburton Gamble

Dr. Watson

Doris Lloyd

Mrs. Annabel Mary Murphy

John Warburton

John Stanford

Leila Bennett

Daffy Dolly

J.M. Kerrigan

Jabez Wilson

Alan Dinehart

Merrydew

Anna May Wong

Mrs. Pyke

Billy Bevan

Will Swallow

Wyndham Standing

Capt. Robin S. Pyke

Halliwell Hobbes

Malcolm Dearing

Edwin L. Marin