During WWII several murders occur at a convalescent home where Dr. Watson has volunteered his services. He summons Holmes for help and the master detective proceeds to solve the crime from a long list of suspects including the owners of the home, the staff and the patients recovering there.
Basil Rathbone
as Sherlock Holmes
Nigel Bruce
as Doctor Watson
Dennis Hoey
as Inspector Lestrade
Hillary Brooke
as Sally Musgrave
Mary Gordon
as Mrs. Hudson
Halliwell Hobbes
as Alfred Brunton, the butler
Milburn Stone
as Capt. Pat Vickery
Minna Phillips
as Mrs. Howells
Arthur Margetson
as Dr. Bob Sexton
Gavin Muir
as Phillip Musgrave
Frederick Worlock
as Geoffrey Musgrave
Norma Varden
as Gracie the Barmaid