Hassim eyed me through narrowed lids and motioned me to follow, as usual. As we crossed the room, my gaze fell upon a man who lay on a couch close to the wall, smoking opium. There was nothing at all suspicious about his ragged, unkempt clothes, his dirty, bearded face or the blank stare, but my eyes, sharpened to an abnormal point, seemed to sense a certain incongruity in the clean-cut limbs which not even the slouchy garments could efface. Hassim spoke impatiently and I turned away. We entered the rear room, and as he shut the door and turned to the table, it moved of itself and a figure bulked up through the hidden doorway. The Sikh, Ganra Singh, a lean sinister-eyed giant, emerged and proceeded to the door opening into the opium room, where he halted until we should have descended and closed the secret doorway. Again I stood amid the billowing yellow smoke and listened to the hidden voice. "Do you think you know enough about Major Morley to impersonate him successfully?" Startled, I answered, "No doubt I could, unless I met someone who was intimate with him." "I will take care of that. Follow me closely. Tomorrow you sail on the first boat for Calais. There you will meet an agent of mine who will accost you the instant you step upon the wharfs, and give you further instructions. You will sail second class and avoid all conversation with strangers or anyone. Take the papers with you. The agent will aid you in making up and your masquerade will start in Calais. That is all. Go!" I departed, my wonder growing. All this rigmarole evidently had a meaning, but one which I could not fathom. Back in the opium room Hassim bade me be seated on some cushions to await his return. To my question he snarled that he was going forth as he had been ordered, to buy me a ticket on the Channel boat. He departed and I sat down, leaning my back against the wall. As I ruminated, it seemed suddenly that eyes were fixed on me so intensely as to disturb my sub-mind. I glanced up quickly but no one seemed to be looking at me. The smoke drifted through the hot atmosphere as usual; Yussef Ali and the Chinese glided back and forth tending to the wants of the sleepers. Suddenly the door to the rear room opened and a strange and hideous figure came haltingly out. Not all of those who found entrance to Yun Shatu's back room were aristocrats and society members. This was one of the exceptions, and one whom I remembered as having often entered and emerged therefrom. A tall, gaunt figure, shapeless in ragged wrappings and nondescript garments, face entirely hidden. Better that the face be hidden, I thought, for without doubt the wrapping concealed a grisly sight. The man was a leper, who had somehow managed to escape the attention of the public guardians and who was occasionally seen haunting the lower and more mysterious regions of East End--a mystery even to the lowest denizens of Limehouse.