Seated in the chair, with his back toward us, was a portly Chinaman who wore a yellow, silken robe.  His face, it was impossible to see; but he was beating his fist upon the table, and pouring out a torrent of words in a thin, piping voice.  So much I perceived at a glance; then, into view at the distant end of the room, paced a tall, high-shouldered figure—­a figure unforgettable, at once imposing and dreadful, stately and sinister.

With the long, bony hands behind him, fingers twining and intertwining serpentinely about the handle of a little fan, and with the pointed chin resting on the breast of the yellow robe, so that the light from the lamp swinging in the center of the ceiling gleamed upon the great, dome-like brow, this tall man paced somberly from left to right.

He cast a sidelong, venomous glance at the voluble speaker out of half-shut eyes; in the act they seemed to light up as with an internal luminance; momentarily they sparkled like emeralds; then their brilliance was filmed over as in the eyes of a bird when the membrane is lowered.

My blood seemed to chill, and my heart to double its pulsations; beside me Smith was breathing more rapidly than usual.  I knew now the explanation of the feeling which had claimed me when first I had descended the stone stairs.  I knew what it was that hung like a miasma over that house.  It was the aura, the glamour, which radiated from this wonderful and evil man as light radiates from radium.  It was the vril, the force, of Dr. Fu-Manchu.

I began to move away from the window.  But Smith held my wrist as in a vise.  He was listening raptly to the torrential speech of the Chinaman who sat in the chair; and I perceived in his eyes the light of a sudden comprehension.

As the tall figure of the Chinese doctor came pacing into view again, Smith, his head below the level of the window, pushed me gently along the passage.

Regaining the site of the trap, he whispered to me:  “We owe our lives, Petrie, to the national childishness of the Chinese!  A race of ancestor worshipers is capable of anything, and Dr. Fu-Manchu, the dreadful being who has rained terror upon Europe stands in imminent peril of disgrace for having lost a decoration.”

“What do you mean, Smith?”

“I mean that this is no time for delay, Petrie!  Here, unless I am greatly mistaken, lies the rope by means of which you made your entrance.  It shall be the means of your exit.  Open the trap!”

Handling the lamp to Smith, I stooped and carefully raised the trap-door.  At which moment, a singular and dramatic thing happened.

A softly musical voice—­the voice of my dreams!—­spoke.

“Not that way!  O God, not that way!”

In my surprise and confusion I all but let the trap fall, but I retained sufficient presence of mind to replace it gently.  Standing upright, I turned . . . and there, with her little jeweled hand resting upon Smith’s arm, stood Karamaneh!