By the flickering light of the expiring lamp I could see that the latch of my door was twitching, as though a gentle pressure was exerted on it from without. Slowly, slowly, it rose, until it was free of the catch, and then there was a pause of a quarter minute or more, while I still sat silent with dilated eyes and drawn sabre. Then, very slowly, the door began to revolve upon its hinges, and the keen air of the night came whistling through the slit. Very cautiously it was pushed open, so that never a sound came from the rusty hinges. As the aperture enlarged, I became aware of a dark, shadowy figure upon my threshold, and of a pale face that looked in at me. The features were human, but the eyes were not. They seemed to burn through the darkness with a greenish brilliancy of their own; and in their baleful, shifty glare I was conscious of the very spirit of murder. Springing from my chair, I had raised my naked sword, when, with a wild shouting, a second figure dashed up to my door. At its approach my shadowy visitant uttered a shrill cry, and fled away across the fells, yelping like a beaten hound. Tingling with my recent fear, I stood at my door, peering through the night with the discordant cry of the fugitives still ringing in my ears. At that moment a vivid flash of lightning illuminated the whole landscape and made it as clear as day. By its light I saw far away upon the hillside two dark figures pursuing each other with extreme rapidity across the fells. Even at that distance the contrast between them forbid all doubt as to their identity. The first was the small, elderly man, whom I had supposed to be dead; the second was my neighbour, the surgeon. For an instant they stood out clear and hard in the unearthly light; in the next, the darkness had closed over them, and they were gone. As I turned to re-enter my chamber, my foot rattled against something on my threshold. Stooping, I found it was a straight knife, fashioned entirely of lead, and so soft and brittle that it was a strange choice for a weapon. To render it more harmless, the top had been cut square off. The edge, however, had been assiduously sharpened against a stone, as was evident from the markings upon it, so that it was still a dangerous implement in the grasp of a determined man. And what was the meaning of it all? you ask. Many a drama which I have come across in my wandering life, some as strange and as striking as this one, has lacked the ultimate explanation which you demand. Fate is a grand weaver of tales; but she ends them, as a rule, in defiance of all artistic laws, and with an unbecoming want of regard for literary propriety. As it happens, however, I have a letter before me as I write which I may add without comment, and which will clear all that may remain dark. "KIRKBY LUNATIC ASYLUM, "_September 4th_, 1885.