Cheney Lane was deserted, utterly still. At the end of it, the street lamp glowed dully, throwing a patch of ghastly light over the side of the adjoining building. I hurried through the shadows, and as I walked, a single idea had possession of me. I must hurry, I thought, with all possible speed, to that grim house in Mate Lane--number seven. Where that deliberate desire came from I did not know. I did not stop to reason. Something had commanded me to go at once to Michael Strange's home. And though I stopped more than once, deliberately turning in my tracks, inevitably I was forced to retrace my steps and continue. * * * * * I remember passing through the square, and prowling through the unlightened side streets that lay beyond. Three miles separated Cheney Lane from Mate Lane, and I had been over the route only once before, in a cab. Yet I followed that route without a single false turn, followed it instinctively. At every intersecting street I was dragged in a certain direction and not once was I allowed to hesitate. It was as though some unseen demon perched on my shoulders, as the demon of the sea rode Sinbad, and pointed out the way. Only one disturbing thing occurred on that night journey through London. I had turned into a narrow street hardly more than a quarter mile from my destination; and before me, in the shadows, I made out the form of a shuffling old man. And here, as I watched him, I was conscious of a new, mad desire. I crept upon him stealthily, without a sound. My hands were outstretched, clutching, for his throat. At that moment I should have killed him! I cannot explain it. During that brief interval I was a murderer at heart. I wanted to kill. And now that I remember it, the desire had been pregnant in me ever since the lights of Cheney Lane had died behind me. All the time that I prowled through those black streets, murder lurked in my heart. I should have killed the first man who crossed my path. But I did not kill him. Thank God, as my fingers twisted toward the back of his throat, that mad desire suddenly left me. I stood still, while the old fellow, still unsuspecting, shuffled, away into the darkness. Then, dropping my hands with a sob of helplessness, I went forward again. * * * * * And so I reached Mate Lane, and the huge gray house that awaited me. This time, as I mounted the stone steps, the old house seemed even more repulsive and horrible. I dreaded to see that door open, but I could not retreat. I dropped the knocker heavily. A moment passed: and then, precisely as before, the huge door swung inward. Michael Strange stood before me. He did not speak. Perhaps, if he had spoken, that fiendish spell would have been broken, and I should have returned, even then, to my own peaceful little rooms in Cheney Lane. No--he merely held the door for me to enter, and as I passed him he stood there, watching me with a significant smile.