Holmes, retired to Sussex, is drawn into a last case when his arch enemy Moriarty arranges with an American gang to kill one John Douglas, a country gentleman with a mysterious past. Holmes' methods baffle Watson and Lestrade, but his results astonish them. In a long flashback, the victim's wife tells the story of the sinister Vermissa Valley.
Arthur Wontner
Lyn Harding
Leslie Perrins
Ian Fleming
Charles Mortimer
Minnie Rayner
Michael Shepley
Jane Carr
Ben Welden
Roy Emerton
Wilfrid Caithness
Conway Dixon
Edmund D'Alby
Ernest Lynds