George Ridgwell
Director
Arthur Conan Doyle
Story
P.L. Mannock
Writer
Geoffrey Malins
Writer
Eille Norwood
Sherlock Holmes
Hubert Willis
Dr. John Watson
Hal Martin
Overton
Jack Raymond
Porter
Albert E. Raynor
Dr. Leslie Armstrong
Leigh Gabell
Staunton
Cliff Davies
Lord Mount James