Sir Arthur Conan Doyle: Memoirs of Sherlock Holmes

7. Adventure VII: The Crooked Man (continued)

"Ah! He has left two nail-marks from his boot upon your linoleum just where the light strikes it. No, thank you, I had some supper at Waterloo, but I'll smoke a pipe with you with pleasure."

I handed him my pouch, and he seated himself opposite to me and smoked for some time in silence. I was well aware that nothing but business of importance would have brought him to me at such an hour, so I waited patiently until he should come round to it.

"I see that you are professionally rather busy just now," said he, glancing very keenly across at me.

"Yes, I've had a busy day," I answered. "It may seem very foolish in your eyes," I added, "but really I don't know how you deduced it."

Holmes chuckled to himself.

"I have the advantage of knowing your habits, my dear Watson," said he. "When your round is a short one you walk, and when it is a long one you use a hansom. As I perceive that your boots, although used, are by no means dirty, I cannot doubt that you are at present busy enough to justify the hansom."

"Excellent!" I cried.

"Elementary," said he. "It is one of those instances where the reasoner can produce an effect which seems remarkable to his neighbor, because the latter has missed the one little point which is the basis of the deduction. The same may be said, my dear fellow, for the effect of some of these little sketches of your, which is entirely meretricious, depending as it does upon your retaining in your own hands some factors in the problem which are never imparted to the reader. Now, at present I am in the position of these same readers, for I hold in this hand several threads of one of the strangest cases which ever perplexed a man's brain, and yet I lack the one or two which are needful to complete my theory. But I'll have them, Watson, I'll have them!" His eyes kindled and a slight flush sprang into his thin cheeks. For an instant only. When I glanced again his face had resumed that red-Indian composure which had made so many regard him as a machine rather than a man.