The result of the night’s traffic, then, spelled failure for British justice, the S.S. _Mahratta_ sailed one stewardess short of her complement; but among the Chinese crew of another steamer Eastward bound was one, Chung Chow, formerly known as Sin Sin Wa. And sometimes in the night watches there arose before him the picture of a black bird resting upon the knees of an aged Chinaman. Beyond these figures dimly he perceived the paddy-fields of Ho-Nan and the sweeping valley of the Yellow River, where the opium poppy grows. It was about an hour before the sailing of the ship which numbered Chung Chow among the yellow members of its crew that Seton Pasha returned once more to the deserted wharf whereon he had found Mrs. Monte Irvin’s spaniel. Afterwards, in the light of ascertained facts, he condemned himself for a stupidity passing the ordinary. For while he had conducted a careful search of the wharf and adjoining premises, convinced that there was a cellar of some kind below, he had omitted to look for a water-gate to this hypothetical cache. Perhaps his self-condemnation was deserved, but in justice to the agent selected by Lord Wrexborough, it should be added that Chief Inspector Kerry had no more idea of the existence of such an entrance, and exit, than had Seton Pasha. Leaving the dog at Leman Street then, and learning that there was no news of the missing Chief Inspector, Seton had set out once more. He had been informed of the mysterious signals flashed from side to side of the Lower Pool, and was hourly expecting a report to the effect that Sin Sin Wa had been apprehended in the act of escaping. That Sin Sin Wa had dropped into the turgid tide from his underground hiding-place, and pushing his property—which was floatable—before him, encased in a waterproof bag, had swum out and clung to the stern of George Martin’s boat as it passed close to the empty wharf, neither Seton Pasha nor any other man knew—except George Martin and Sin Sin Wa. At a suitably dark spot the Chinaman had boarded the little craft, not without difficulty, for his wounded shoulder pained him, and had changed his sodden attire for a dry outfit which awaited him in the locker at the stern of the skiff. The cunning of the Chinese has the simplicity of true genius. Not two paces had Seton taken on to the mystifying wharf when: “Sam Tûk barber! Entrance in cellar!” rapped a ghostly, muffled voice from beneath his feet. “Sam Tûk barber! Entrance in cellar!” Seton Pasha stood still, temporarily bereft of speech. Then, “_Kerry!_” he cried. “Kerry! Where are you?” But apparently his voice failed to reach the invisible speaker, for: “Sam Tûk barber! Entrance in cellar!” repeated the voice. Seton Pasha wasted no more time. He ran out into the narrow street. A man was on duty there. “Call assistance!” ordered Seton briskly, “Send four men to join me at the barber’s shop called Sam Tûk’s! You know it?” “Yes, sir; I searched it with Chief Inspector Kerry.”