The Sign of the Four

By Sir Arthur Conan Doyle



Chapter 1
The Science of Deduction



Sherlock Holmes took his bottle from the corner of the mantel-
piece and his hypodermic syringe from its neat morocco case.
With his long, white, nervous fingers he adjusted the delicate
needle, and rolled back his left shirt-cuff. For some little
time his eyes rested thoughtfully upon the sinewy forearm and
wrist all dotted and scarred with innumerable puncture-marks.
Finally he thrust the sharp point home, pressed down the tiny
piston, and sank back into the velvet-lined arm-chair with a long
sigh of satisfaction.

Three times a day for many months I had witnessed this
performance, but custom had not reconciled my mind to it. On the
contrary, from day to day I had become more irritable at the
sight, and my conscience swelled nightly within me at the thought
that I had lacked the courage to protest. Again and again I had
registered a vow that I should deliver my soul upon the subject,
but there was that in the cool, nonchalant air of my companion
which made him the last man with whom one would care to take
anything approaching to a liberty. His great powers, his