“Then why did they fly?”

“Quite so. Why did they fly? There is a big fact. Another big fact is the remarkable experience of our client, Scott Eccles. Now, my dear Watson, is it beyond the limits of human ingenuity to furnish an explanation which would cover both of these big facts? If it were one which would also admit of the mysterious note with its very curious phraseology, why, then it would be worth accepting as a temporary hypothesis. If the fresh facts which come to our knowledge all fit themselves into the scheme, then our hypothesis may gradually become a solution.”

“But what is our hypothesis?”

Holmes leaned back in his chair with half-closed eyes.

“You must admit, my dear Watson, that the idea of a joke is impossible. There were grave events afoot, as the sequel showed, and the coaxing of Scott Eccles to Wisteria Lodge had some connection with them.”

“But what possible connection?”