The possibility of some one having worn them since Manderson’s death was not worth considering; the body had only been found about twenty-six hours when I was examining the shoes; besides, why should any one wear them? The possibility of some one having borrowed Manderson’s shoes and spoiled them for him while he was alive seemed about as negligible. With others to choose from he would not have worn these. Besides, the only men in the place were the butler and the two secretaries. But I do not say that I gave those possibilities even as much consideration as they deserved, for my thoughts were running away with me, and I have always found it good policy, in cases of this sort, to let them have their heads. Ever since I had got out of the train at Marlstone early that morning I had been steeped in details of the Manderson affair; the thing had not once been out of my head. Suddenly the moment had come when the daemon wakes and begins to range. Let me put it less fancifully. After all, it is a detail of psychology familiar enough to all whose business or inclination brings them in contact with difficult affairs of any kind. Swiftly and spontaneously, when chance or effort puts one in possession of the key-fact in any system of baffling circumstances, one’s ideas seem to rush to group themselves anew in relation to that fact, so that they are suddenly rearranged almost before one has consciously grasped the significance of the key-fact itself. In the present instance, my brain had scarcely formulated within itself the thought, “Somebody who was not Manderson has been wearing these shoes,” when there flew into my mind a flock of ideas, all of the same character and all bearing upon this new notion. It was unheard-of for Manderson to drink much whisky at night. It was very unlike him to be untidily dressed, as the body was when found—the cuffs dragged up inside the sleeves, the shoes unevenly laced; very unlike him not to wash when he rose, and to put on last night’s evening shirt and collar and underclothing; very unlike him to have his watch in the waistcoat pocket that was not lined with leather for its reception. (In my first dispatch I mentioned all these points, but neither I nor any one else saw anything significant in them when examining the body.) It was very strange, in the existing domestic situation, that Manderson should be communicative to his wife about his doings, especially at the time of his going to bed, when he seldom spoke to her at all. It was extraordinary that Manderson should leave his bedroom without his false teeth.