“The first three sensible words that you have uttered since you entered this room, Watson. You will find some books over there. I am somewhat exhausted; I wonder how a battery feels when it pours electricity into a nonconductor? At six, Watson, we resume our conversation.”

But it was destined to be resumed long before that hour, and in circumstances which gave me a shock hardly second to that caused by his spring to the door. I had stood for some minutes looking at the silent figure in the bed. His face was almost covered by the clothes and he appeared to be asleep. Then, unable to settle down to reading, I walked slowly round the room, examining the pictures of celebrated criminals with which every wall was adorned. Finally, in my aimless perambulation, I came to the mantelpiece. A litter of pipes, tobacco-pouches, syringes, penknives, revolver-cartridges, and other debris was scattered over it. In the midst of these was a small black and white ivory box with a sliding lid. It was a neat little thing, and I had stretched out my hand to examine it more closely, when⁠—