“And what do you think of it all, Watson?” asked Sherlock Holmes, leaning back in his chair.
“It seems to me to be a most dark and sinister business.”
“Dark enough and sinister enough.”
“Yet if the lady is correct in saying that the flooring and walls are sound, and that the door, window, and chimney are impassable, then her sister must have been undoubtedly alone when she met her mysterious end.”
“What becomes, then, of these nocturnal whistles, and what of the very peculiar words of the dying woman?”
“I cannot think.”
“When you combine the ideas of whistles at night, the presence of a band of gypsies who are on intimate terms with this old doctor, the fact that we have every reason to believe that the doctor has an interest in preventing his step-daughter’s marriage, the dying allusion to a band, and, finally, the fact that Miss Helen Stoner heard a metallic clang, which might have been caused by one of those metal bars which secured the shutters falling back into their place, I think that there is good ground to think that the mystery may be cleared along those lines.”
“But what, then, did the gypsies do?”
“I cannot imagine.”
“I see many objections to any such theory.”