It was mere phantasy, of course, the sick imaginings of a mind overwrought. I had not slept and had scarcely tasted food for more than thirty hours; for, following up a faint clue supplied by Burke, Slattin's man, and, like his master, an ex-officer of New York Police, my friend, Nayland Smith, on the previous evening had set out in quest of some obscene den where the man called Shen-Yan—former keeper of an opium-shop—was now said to be in hiding.
Shen-Yan we knew to be a creature of the Chinese doctor, and only a most urgent call had prevented me from joining Smith upon this promising, though hazardous expedition.
At any rate, Fate willing it so, he had gone without me; and now—although Inspector Weymouth, assisted by a number of C. I. D. men, was sweeping the district about me—to the time of my departure nothing whatever had been heard of Smith. The ordeal of waiting finally had proved too great to be borne. With no definite idea of what I proposed to do, I had thrown myself into the search, filled with such dreadful apprehensions as I hope never again to experience.
I did not know the exact situation of the place to which Smith was gone, for owing to the urgent case which I have mentioned, I had been absent at the time of his departure; nor could Scotland Yard enlighten me upon this point. Weymouth was in charge of the case—under Smith's direction—and since the inspector had left the Yard, early that morning, he had disappeared as completely as Smith, no report having been received from him.
As my driver turned into the black mouth of a narrow, ill-lighted street, and the glare and clamor of the greater thoroughfare died behind me, I sank into the corner of the cab burdened with such a sense of desolation as mercifully comes but rarely.
We were heading now for that strange settlement off the West India Dock Road, which, bounded by Limehouse Causeway and Pennyfields, and narrowly confined within four streets, composes an unique Chinatown, a miniature of that at Liverpool, and of the greater one in San Francisco. Inspired with an idea which promised hopefully, I raised the speaking tube.
"Take me first to the River Police Station," I directed; "along Ratcliffe Highway."
The man turned and nodded comprehendingly, as I could see through the wet pane.
Presently we swerved to the right and into an even narrower street. This inclined in an easterly direction, and proved to communicate with a wide thoroughfare along which passed brilliantly lighted electric trams. I had lost all sense of direction, and when, swinging to the left and to the right again, I looked through the window and perceived that we were before the door of the Police Station, I was dully surprised.
In quite mechanical fashion I entered the depot. Inspector Ryman, our associate in one of the darkest episodes of the campaign with the Yellow Doctor two years before, received me in his office.
By a negative shake of the head, he answered my unspoken question.
"The ten o'clock boat is lying off the Stone Stairs, Doctor," he said, "and co-operating with some of the Scotland Yard men who are dragging that district—"
I shuddered at the word "dragging"; Ryman had not used it literally, but nevertheless it had conjured up a dread possibility—a possibility in accordance with the methods of Dr. Fu-Manchu. All within space of an instant I saw the tide of Limehouse Reach, the Thames lapping about the green-coated timbers of a dock pier; and rising—falling—sometimes disclosing to the pallid light a rigid hand, sometimes a horribly bloated face—I saw the body of Nayland Smith at the mercy of those oily waters. Ryman continued:
"There is a launch out, too, patrolling the riverside from here to Tilbury. Another lies at the breakwater"—he jerked his thumb over his shoulder. "Should you care to take a run down and see for yourself?"
"No, thanks," I replied, shaking my head. "You are doing all that can be done. Can you give me the address of the place to which Mr. Smith went last night?"
"Certainly," said Ryman; "I thought you knew it. You remember Shen-Yan's place—by Limehouse Basin? Well, further east—east of the Causeway, between Gill Street and Three Colt Street—is a block of wooden buildings. You recall them?"
"Yes," I replied. "Is the man established there again, then?"
"It appears so, but, although you have evidently not been informed of the fact, Weymouth raided the establishment in the early hours of this morning!"
"Well?" I cried.
"Unfortunately with no result," continued the inspector. "The notorious Shen-Yan was missing, and although there is no real doubt that the place is used as a gaming-house, not a particle of evidence to that effect could be obtained. Also—there was no sign of Mr. Nayland Smith, and no sign of the American, Burke, who had led him to the place."
"Is it certain that they went there?"
"Two C. I. D. men who were shadowing, actually saw the pair of them enter. A signal had been arranged, but it was never given; and at about half past four, the place was raided."
"Surely some arrests were made?"
"But there was no evidence!" cried Ryman. "Every inch of the rat-burrow was searched. The Chinese gentleman who posed as the proprietor of what he claimed to be a respectable lodging-house offered every facility to the police. What could we do?"
"I take it that the place is being watched?"
"Certainly," said Ryman. "Both from the river and from the shore. Oh! they are not there! God knows where they are, but they are not there!"
I stood for a moment in silence, endeavoring to determine my course; then, telling Ryman that I hoped to see him later, I walked out slowly into the rain and mist, and nodding to the taxi-driver to proceed to our original destination, I re-entered the cab.
As we moved off, the lights of the River Police depot were swallowed up in the humid murk, and again I found myself being carried through the darkness of those narrow streets, which, like a maze, hold secret within their labyrinth mysteries as great, and at least as foul, as that of Pasiphae.
The marketing centers I had left far behind me; to my right stretched the broken range of riverside buildings, and beyond them flowed the Thames, a stream more heavily burdened with secrets than ever was Tiber or Tigris. On my left, occasional flickering lights broke through the mist, for the most part the lights of taverns; and saving these rents in the veil, the darkness was punctuated with nothing but the faint and yellow luminance of the street lamps.
Ahead was a black mouth, which promised to swallow me up as it had swallowed up my friend.
In short, what with my lowered condition and consequent frame of mind, and what with the traditions, for me inseparable from that gloomy quarter of London, I was in the grip of a shadowy menace which at any moment might become tangible—I perceived, in the most commonplace objects, the yellow hand of Dr. Fu-Manchu.
When the cab stopped in a place of utter darkness, I aroused myself with an effort, opened the door, and stepped out into the mud of a narrow lane. A high brick wall frowned upon me from one side, and, dimly perceptible, there towered a smoke stack, beyond. On my right uprose the side of a wharf building, shadowly, and some distance ahead, almost obscured by the drizzling rain, a solitary lamp flickered. I turned up the collar of my raincoat, shivering, as much at the prospect as from physical chill.
"You will wait here," I said to the man; and, feeling in my breast-pocket, I added: "If you hear the note of a whistle, drive on and rejoin me."