"At the end of the week."
"On the whole," said Holmes, "I think that your decision is a wise one.
I have ample evidence that you are being dogged in London, and amid the millions of this great city it is difficult to discover who these people are or what their object can be.
If their intentions are evil they might do you a mischief, and we should be powerless to prevent it.
You did not know, Dr. Mortimer, that you were followed this morning from my house?"
Dr. Mortimer started violently. "Followed! By whom?"
"That, unfortunately, is what I cannot tell you. Have you among your neighbours or acquaintances on Dartmoor any man with a black, full beard?"
"No-or, let me see-why, yes. Barrymore, Sir Charles's butler, is a man with a full, black beard."
"Ha! Where is Barrymore?"
"He is in charge of the Hall."