Casts
Basil Rathbone
as Sherlock Holmes
Nigel Bruce
as Doctor Watson
Marjorie Lord
as Nancy Partridge
Henry Daniell
as William Easter
George Zucco
as Heinrich Hinckel aka Richard Stanley
John Archer
as Naval Lt. Pete Merriam
Gavin Muir
as Mr. Lang, government agent
Edmund MacDonald
as Detective Lt. Grogan
Don Terry
as Howe
Mary Gordon
as Mrs. Hudson
