George Ridgwell
Director
Arthur Conan Doyle
Novel
Geoffrey Malins
Writer
Patrick L. Mannock
Writer
Eille Norwood
Sherlock Holmes
Hubert Willis
Dr. John Watson
Hugh Buckler
Pat Cairns
Mrs. Hubert Willis
Mrs. Carey
Fred Paul
Peter Carey
Miss Willis
Miss Carey
Teddy Arundell
Insp. Stanley Hopkins
Mme. d'Esterre
Mrs. Hudson
Jack Jarman
John Neligan
Fred Rains
Neligan Sr.