Sir Lucien came out into the alley wearing a greasy cloth cap pulled down over his eyes and an old overall, the collar turned up about a red woollen muffler which enveloped the lower part of his face. The odor of the outfit was disgusting, but this man's double life had brought him so frequently in contact with all forms of uncleanness, including that of the Far East, compared with which the dirt of the West is hygienic, that he suffered it without complaint.  
A Chinese “boy” of indeterminable age, wearing a slop-shop suit and a cap, was waiting outside the door, and when Sin Sin Wa appeared, carefully locking up, he muttered something rapidly in his own sibilant language.
 
Sin Sin Wa made no reply. To his indoor attire he had added a pea-jacket and a bowler hat; and the oddly assorted trio set off westward, following the bank of the Thames in the direction of Limehouse Basin. The narrow, ill-lighted streets were quite deserted, but from the river and the riverside arose that ceaseless jangle of industry which belongs to the great port of London. On the Surrey shore whistles shrieked, and endless moving chains sent up their monstrous clangor into the night. Human voices sometimes rose above the din of machinery.
 
In silence the three pursued their way, crossing inlets and circling around basins dimly divined, turning to the right into a lane flanked by high, eyeless walls, and again to the left, finally to emerge nearly opposite a dilapidated gateway giving access to a small wharf, on the rickety gates bills were posted announcing, “This Wharf to Let.” The annexed building appeared to be a mere shell. To the right again they turned, and once more to the left, halting before a two-story brick house which had apparently been converted into a barber's shop. In one of the grimy windows were some loose packets of cigarettes, a soapmaker's advertisement, and a card:
 
    SAM TUK
    BARBER
 
Opening the door with a key which he carried, the boy admitted Sir Lucien and Sin Sin Wa to the dimly-lighted interior of a room the pretensions of which to be regarded as a shaving saloon were supported by the presence of two chairs, a filthy towel, and a broken mug. Sin Sin Wa shuffled across to another door, and, followed by Sir Lucien, descended a stone stair to a little cellar apparently intended for storing coal. A tin lamp stood upon the bottom step.
 
Removing the lamp from the step, Sin Sin Wa set it on the cellar floor, which was black with coal dust, then closed and bolted the door. A heap of nondescript litter lay piled in a corner of the cellar. This Sin Sin Wa disturbed sufficiently to reveal a movable slab in the roughly paved floor. It was so ingeniously concealed by coal dust that one who had sought it unaided must have experienced great difficulty in detecting it. Furthermore, it could only be raised in the following manner:
 
A piece of strong iron wire, which lay among the other litter, was inserted in a narrow slot, apparently a crack in the stone. About an inch of the end of the wire being bent outward to form a right angle, when the seemingly useless piece of scrap-iron had been thrust through the slab and turned, it formed a handle by means of which the trap could be raised.
 
Again Sin Sin Wa took up the lamp, placing it at the brink of the opening revealed. A pair of wooden steps rested below, and Sir Lucien, who evidently was no stranger to the establishment, descended awkwardly, since there was barely room for a big man to pass. He found himself in the mouth of a low passage, unpaved and shored up with rough timbers in the manner of a mine-working. Sin Sin Wa followed with the lamp, drawing the slab down into its place behind him.
 
Stooping forward and bending his knees, Sir Lucien made his way along the passage, the Chinaman following. It was of considerable length, and terminated before a strong door bearing a massive lock. Sin Sin Wa reached over the stooping figure of Sir Lucien and unfastened the lock. The two emerged in a kind of dug-out. Part of it had evidently been in existence before the ingenious Sin Sin Wa had exercised his skill upon it, and was of solid brickwork and stone-paved; palpably a storage vault. But it had been altered to suit the Chinaman's purpose, and one end—that in which the passage came out—was timbered. It contained a long counter and many shelves; also a large oil-stove and a number of pots, pans, and queer-looking jars. On the counter stood a ship's lantern. The shelves were laden with packages and bottles. Behind the counter sat a venerable and perfectly bald Chinaman. The only trace of hair upon his countenance grew on the shrunken upper lip—mere wisps of white down. His skin was shrivelled like that of a preserved fig, and he wore big horn-rimmed spectacles. He never once exhibited the slightest evidence of life, and his head and face, and the horn-rimmed spectacles, might quite easily have passed for those of an unwrapped mummy. This was Sam Tuk.
 
Bending over a box upon which rested a canvas-bound package was a burly seaman engaged in unknotting the twine with which the canvas was kept in place. As Sin Sin Wa and Sir Lucien came in he looked up, revealing a red-bearded, ugly face, very puffy under the eyes.
 
“Wotcher, Sin Sin!” he said gruffly. “Who's your long pal?”
 
“Friend,” murmured Sin Sin Wa complacently. “You gotchee pukka stuff thisee time, George?”
 
“I allus brings the pukka stuff!” roared the seaman, ceasing to fumble with the knots and glaring at Sin Sin Wa. “Wotcher mean—pukka stuff?”
 
“Gotchee no use for bran,” murmured Sin Sin Wa. “Gotchee no use for tin-tack. Gotchee no use for glue.”
 
“Bran!” roared the man, his glance and pose very menacing. “Tin-tacks and glue! Who the flamin' 'ell ever tried to sell you glue?”
 
“Me only wantchee lemindee you,” said Sin Sin Wa. “No pidgin.”
 
“George” glared for a moment, breathing heavily; then he stooped and resumed his task, Sin Sin Wa and Sir Lucien watching him in silence. A sound of lapping water was faintly audible.
 
Opening the canvas wrappings, the man began to take out and place upon the counter a number of reddish balls of “leaf” opium, varying in weight from about eight ounces to a pound or more.
 
“H'm!” murmured Sin Sin Wa. “Smyrna stuff.”
 
From a pocket of his pea-jacket he drew a long bodkin, and taking up one of the largest balls he thrust the bodkin in and then withdrew it, the steel stained a coffee color. Sin Sin Wa smelled and tasted the substance adhering to the bodkin, we............