Top cast
Arthur Wontner
Sherlock Holmes
Ian Fleming
Dr. John Watson
Minnie Rayner
Mrs. Hudson
Leslie Perrins
Ronald Adair
Jane Welsh
Kathleen Adair
Norman McKinnel
Prof. Robert Moriarty / Col. Henslowe
William Fazan
Thomas Fisher
Sydney King
Tony Rutherford
Philip Hewland
Inspector Lestrade
Gordon Begg
Marston, the butler
Louis Goodrich
Colonel Sebastian Moran
Harry Terry
No. 16
