Knowledge of where I was gave me courage, however. My head was very painful with strange fancies dancing through my imagination. I think that the blow had unbalanced my brain. Which way should I turn? To right or left? Was mortal man ever in such a predicament? I recognised the truth. I remembered one appalling fact. The scoundrels had sent me through into that deadly place, knowing that even if the fall did not kill me outright, I must be drowned when, at regular intervals, the sewer was automatically flushed, and my body washed out to the Thames estuary. I had seen the walls still wet to the roof from the last flushing, and as I recognised my awful peril, my blood ran cold. At any moment might come that gigantic flood to sweep me away into eternity in an instant. Somewhere, higher up, was that mechanism which at certain hours of day and night automatically let loose the great sweeping wave through the long, black tunnel sweeping to the sea, the cleansing of London. My only hope was to find safety somewhere, therefore in frantic haste, all forgetful of the pain I was suffering, I turned to the right and groped along the wall by aid of a match, the light of which was not sufficient to show the true dimensions of the sewer. On, on, I went, how far I have no idea. It seemed to be miles. My matches burned only dimly, so bad was the air. Time after time I came to side channels, small arches belching forth their black stream into the roaring torrent like tributaries of a river, until I suddenly saw something white upon the wall, and, raising my match, discerned the painted words: "Poland Street." Then I knew that I was beneath Poland Street, close to Oxford Street. I was in search of a manhole by which to ascend to the roadway, but, alas! could not discover one. A great terror seized me lest the flush should come before I could gain a place of safety. I was in the act of striking another match, in order to proceed more quickly, when I felt my head reeling, and in clutching at the wall for support the matchbox fell from my nerveless fingers into the water. My disaster was thus complete. Without light how could I find a place in which to raise myself above the level of the flood? My heart stood still. In that moment the recollection of all the sequence of strange and startling events of the past few weeks passed in rapid review before me. My enemies had entrapped me, and I now knew that I was doomed. Eric's shout of defiance, followed by that groan and shriek, still rang in my ears, but, most tantalising of all, I had no idea where the house to which I had been enticed was situated. It was somewhere off Regent Street, but further than that I had no knowledge. I saw how cleverly the whole affair had been arranged; how the man introduced to me as Humphreys had met us by appointment in the vestibule of the Empire, and how, knowing my interest in antiques, the bait had been so cleverly placed.