Characters played by Arthur Wontner
Sherlock Holmes
Characters played by Ian Fleming
Dr. John Watson
Characters played by Minnie Rayner
Mrs. Hudson
Characters played by Leslie Perrins
Ronald Adair
Characters played by Jane Welsh
Kathleen Adair
Characters played by Norman McKinnel
Prof. Robert Moriarty - alias Col. Henslowe
Characters played by William Fazan
Thomas Fisher
Characters played by Sydney King
Tony Rutherford
Characters played by Philip Hewland
Inspector Lestrade
Characters played by Gordon Begg
Marston - the Butler
Characters played by Louis Goodrich
Col. Sebastian Moran
Characters played by Harry Terry
No. 16
Characters played by Charles Paton
J.J. Godfrey