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.
Halliwell Hobbes
Alfred Brunton, the butler

The Hound of the Baskervilles
1959
The Musgrave Ritual
1912
Another version
The Musgrave Ritual
1922
Another version