Yan had noiselessly withdrawn, and I experienced a curious sense of isolation from my fellows—from the whole of the Western world. My throat was parched with the fumes, my head ached. The vicious atmosphere seemed contaminating. I was as one dropped—

Somewhere East of Suez, where the best is like the worst, And there ain't no Ten Commandments and a man can raise a thirst.

Smith began to whisper softly.

"We have carried it through successfully so far," he said. "I don't know if you have observed it, but there is a stair just behind you, half concealed by a ragged curtain. We are near that, and well in the dark. I have seen nothing suspicious so far—or nothing much. But if there was anything going forward it would no doubt be delayed until we new arrivals were well doped. S-SH!"

He pressed my arm to emphasize the warning. Through my half-closed eyes I perceived a shadowy form near the curtain to which he had referred. I lay like a log, but my muscles were tensed nervously.

The shadow materialized as the figure moved forward into the room with a curiously lithe movement.

The smoky lamp in the middle of the place afforded scant illumination, serving only to indicate sprawling shapes—here an extended hand, brown or yellow, there a sketchy, corpse-like face; whilst from all about rose obscene sighings and murmurings in far-away voices—an uncanny, animal chorus. It was like a glimpse of the Inferno seen by some Chinese Dante. But so close to us stood the newcomer that I was able to make out a ghastly parchment face, with small, oblique eyes, and a misshapen head crowned with a coiled pigtail, surmounting a slight, hunched body. There was something unnatural, inhuman, about that masklike face, and something repulsive in the bent shape and the long, yellow hands clasped one upon the other.

Fu-Manchu, from Smith's account, in no way resembled this crouching apparition with the death's-head countenance and lithe movements; but an instinct of some kind told me that we were on the right scent—that this was one of the doctor's servants. How I came to that conclusion, I cannot explain; but with no doubt in my mind that this was a member of the formidable murder group, I saw the yellow man creep nearer, nearer, silently, bent and peering.

He was watching us.

Of another circumstance I became aware, and a disquieting circumstance. There were fewer murmurings and sighings from the surrounding bunks. The presence of the crouching figure had created a sudden semi-silence in the den, which could only mean that some of the supposed opium-smokers had merely feigned coma and the approach of coma.