THE MYSTERY OF THE YELLOW ROOM
sieur Darzac had given him, while he lit his briarwood—his eternal briarwood.
We remained in his room until about ten o'clock without a word passing between us. Buried in an armchair Rouletabille sat and smoked steadily, his brow in thought and a far-away look in his eyes. On the stroke of ten he took off his boots and signalled to me to do the same. As we stood in our socks he said, in so low a tone that I guessed, rather than heard, the word:
"Revolver."
I drew my revolver from my jacket pocket.
"Cock it!" he said.
I did as he directed.
Then moving towards the door of his room, he opened it with infinite precaution; it made no sound. We were in the "off-turning" gallery. Rouletabille made another sign to me which I understood to mean that I was to take up my post in the dark closet.
When I was some distance from him, he rejoined me and embraced me; and then I saw him, with the same precaution, return to his room. Astonished by his embrace, and somewhat disquieted by it, I arrived at the right gallery without difficulty, crossing the landing-place, and reaching the dark closet.
Before entering it I examined the curtain-cord of the window and found that I had only to release it from its fastening with my fingers for the curtain to fall by its own weight and hide the square of light from Rouletabille—the signal agreed upon. The sound of a footstep made me halt be-
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