The Question and Answer section for The Hound of the Baskervilles is a great resource to ask questions, find answers, and discuss the novel.
The walking sick will give them clues to the identity of the man who left it.
"Since we have been so unfortunate as to miss him and have no notion of his errand, this accidental souvenir becomes of importance. Let me hear you reconstruct the man...
Doctor Mortimer is extremely afraid for sir Henry's life since if he dies, his mansion might be given to the wrong person