“Good morning, madam,” said Holmes cheerily. “My name is Sherlock Holmes. This is my intimate friend and associate, Dr. Watson, before whom you can speak as freely as before myself. Ha! I am glad to see that Mrs. Hudson has had the good sense to light the fire. Pray draw up to it, and I shall order you a cup of hot coffee, for I observe that you are shivering.”

“It is not cold which makes me shiver,” said the woman in a low voice, changing her seat as requested.

“What, then?”