Trailer
Cast
George Zucco
Heinrich Hinckel aka Richard Stanley
Gavin Muir
Mr. Lang, government agent
Mary Gordon
Mrs. Hudson
Thurston Hall
Sen. Henry Babcock
Ian Wolfe
Antiques Store Sales Clerk
Don Terry
Howe
Clarence Muse
George
Gerald Hamer
Alfred Pettibone
Colin Kenny
Hotel Doorman (uncredited)
Caroline Frances Cooke
Mrs. Ruxton
Bradley Page
Cady
Nigel Bruce
Doctor Watson
John Archer
Naval Lt. Pete Merriam
Edmund MacDonald
Detective Lt. Grogan
Gilbert Emery
Sir Henry Marchmont (uncredited)
Margaret Seddon
Miss Pringle (uncredited)
Basil Rathbone
Sherlock Holmes
Mary Forbes
Mrs. Pettibone
Holmes Herbert
Mr. Ahrens
Henry Daniell
William Easter