stamping her foot passionately.
"You have hands and arms," she cried, "and yet you let me go. Be warned, then; fly from here — " She broke off with something that sounded like a sob.
I made no move to stay her — this beautiful accomplice of the arch-murderer, Fu-Manchu. I heard her light footsteps pattering down the stairs, I heard her open and close the door — the door of which Dr. Fu-Manchu held the key. Still I stood where she had parted from me, and was so standing when a key grated in the lock and Nayland Smith came running up.
"Did you see her?" I began.
But his face showed that he had not done so, and rapidly I told him of my strange visitor, of her words, of her warning.
"How can she have passed through London in that costume?" I cried in bewilderment. "Where can she have come from?"
Smith shrugged his shoulders and began to stuff broad-cut mixture into the familiar cracked briar.
"She might have traveled in a car or in a cab," he said; "and undoubtedly she came direct from the house of Dr. Fu-Manchu. You should have detained her, Petrie. It is the third time we have had that woman in our power, the third time we have let her go free."
"Smith," I replied, "I couldn't. She came of her own free will to give me a warning. She disarms me."
"Because you can see she is in love with you?" he suggested, and burst into one of his rare laughs when the angry flush rose to my cheek. "She is, Petrie why pretend to be blind to it? You don't know the Oriental mind as I do; but I quite understand the girl's position. She fears the English authorities, but would submit to capture by you! If you would only seize her by the hair, drag her to some cellar, hurl her down and stand over her with a whip, she would tell you everything she knows, and salve her strange Eastern conscience with the reflection that speech was forced from her. I am not joking; it is so, I assure you. And she would adore you for your savagery, deeming you forceful and strong!"
"Smith," I said, "be serious. You know what her warning meant before."
"I can guess what it means now," he rapped. "Hallo!"
Someone was furiously ringing the bell.
"No one at home?" said my friend. "I will go. I think I know what it is."
A few minutes later he returned, carrying a large square package.
"From Weymouth," he explained, "by district messenger. I left him behind at the docks, and he arranged to forward any evidence which subsequently he found. This will be fragments of the mummy."
"What! You think the mummy was abstracted?"
"Yes, at the docks. I am sure of it; and somebody else was in the sarcophagus when it reached Rowan House. A sarcophagus, I find, is practically airtight, so that the use of the rubber stopper becomes evident — ventilation. How this person killed Strozza I have yet to learn."
"Also, how he escaped from a locked room. And what about the green mist?"
Nayland Smith spread his hands in a characteristic gesture.
"The green mist, Petrie, can be explained in several ways. Remember, we have only one man's word that it existed. It is at best a confusing datum to which we must not attach a factitious importance."
He threw the wrappings on the floor and tugged at a twine loop in the lid of the square box, which now stood upon the table. Suddenly the lid came away, bringing with it a lead lining, such as is usual in tea-chests. This lining was partially attached to one side of the box, so that the action of removing the lid at once raised and tilted it.
Then happened a singular thing.
Out over the table billowed a sort of yellowish-green cloud — an oily vapor — and an inspiration, it was nothing less, born of a memory and of some words of my beautiful visitor, came to me.
"RUN, SMITH!" I screamed. "The door! the door, for your life! Fu-Manchu sent that box!" I threw my arms round him. As he bent forward the moving vapor rose almost to his nostrils. I dragged him back and all but pitched him out on to the landing. We entered my bedroom, and there, as I turned on the light, I saw that Smith's tanned face was unusually drawn, and touched with pallor.
"It is a poisonous gas!" I said hoarsely; "in many respects identical with chlorine, but having unique properties which prove it to be something else — God and Fu-Manchu, alone know what! It is the fumes of chlorine that kill the men in the bleaching powder works. We have been blind — I particularly. Don't you see? There was no one in the sarcophagus, Smith, but there was enough of that fearful stuff to have suffocated a regiment!"
Smith clenched his fists convulsively.
"My God!" he said, "how can I hope to deal with the author of such a scheme? I see the whole plan. He did not reckon on the mummy case being overturned, and Kwee's part was to remove the plug with the aid of the string — after Sir Lionel had been suffocated. The gas, I take it, is heavier than air."
"Chlorine gas has a specific gravity of 2.470," I said; "two and a half times heavier than air. You can pour it from jar to jar like a liquid — if you are wearing a chemist's mask. In these respects this stuff appears to be similar; the points of difference would not interest you. The sarcophagus would have emptied through the vent, and the gas have dispersed, with no clew remaining — except the smell."
"I did smell it, Petrie, on the stopper, but, of course, was unfamiliar with it. You may remember that you were prevented from doing so by the arrival of Sir Lionel? The scent of those infernal flowers must partially have drowned it, too. Poor, misguided Strozza inhaled the stuff, capsized the case in his fall, and all the gas — "
"Went pouring under the conservatory door, and down the steps, where Kwee was crouching. Croxted's breaking the window created sufficient draught to disperse what little remained. It will have settled on the floor now. I will go and open both windows."
Nayland raised his haggard face.
"He evidently made more than was necessary to dispatch Sir Lionel Barton," he said; "and contemptuously — you note the attitude, Petrie? — contemptuously devoted the surplus to me. His contempt is justified. I am a child striving to cope with a mental giant. It is by no wit of mine that Dr. Fu-Manchu scores a double failure."
CHAPTER XIII
I WILL tell you, now of a strange dream which I dreamed, and of the stranger things to which I awakened. Since, out of a blank — a void — this vision burst in upon my mind, I cannot do better than relate it, without preamble. It was thus:
I dreamed that I lay writhing on the floor in agony indescribable. My veins were filled with liquid fire, and but that stygian darkness was about me, I told myself that I must have seen the smoke arising from my burning body.
This, I thought, was death.
Then, a cooling shower descended upon me, soaked through skin and tissue to the tortured arteries and quenched the fire within. Panting, but free from pain, I lay — exhausted.
Strength gradually returning to me, I tried to rise; but the carpet felt so singularly soft that it offered me no foothold. I waded and plunged like a swimmer treading water; and all about me rose impenetrable walls of darkness, darkness all but palpable. I wondered why I could not see the windows. The horrible idea flashed to my mind that I was become blind!
Somehow I got upon my feet, and stood swaying dizzily. I became aware of a heavy perfume, and knew it for some kind of incense.
Then — a dim light was born, at an immeasurable distance away. It grew steadily in brilliance. It spread like a bluish-red stain — like a liquid. It lapped up the darkness and spread throughout the room.
But this was not my room! Nor was it any room known to me.
It was an apartment of such size that its dimensions