“It was almost at the moment when I reached this stage of thought that a number of hitherto insufficiently substantiated suspicions which had been steadily massing in my mind suddenly rearranged themselves in such a manner as to become extra links in my chain of reasoning rather than the wild plungings of a mind tired of logic. This merging of reason with intuition (they are twins, those two) left me certain that I should know who I was trying to prove guilty if Deacon gave me the name of the man against whom these suspicions of mine had been directed in answer to the question: ‘Who, at any time within the last twenty-four hours preceding the murder, induced you to hold in your right hand an implement with a short, thick wooden handle of the same appearance as the handle you have seen in the wood-rasp?’ “You see, I had already learned that of the Abbotshall _ménage_ four men frequently used, and had consequent access to, carpenter’s tools. These were the gardener, the chauffeur, the murdered man, and the guest from whom I had the information. “Hoode, the gardener, and the chauffeur I disregarded. The first because he was not his own murderer; the second because at the time of the murder he was in bed at the Cottage Hospital in Marling; and the third because he has respectable and trustworthy friends to swear that he spent the evening of the crime in their company. “Remained the guest—that enthusiastic amateur Dædalus—and he the man that from the beginning had excited those nebulous suspicions I have mentioned. He was living in the house at the time when the murder was committed. He was, by his own showing, an amateur carpenter of experience and enthusiasm. (Early he simulated ignorance as to the name of a wood-rasp. Later, by his voluntary statement, he showed that he could not have been ignorant of it. This was the only slip he made when talking with me.) “Before I took opportunity to ask Deacon the all-important question, I did much and thought more. With one exception, these thoughts and actions are proper to the next part of this report, and accordingly are dealt with there. The exception is this:—