"It was a cigar ash on the hearth, and I looked for a cigar end among the cinders and could not find one. It was cigarette ash on the writing-table, and I found the cigarette end, you will remember. It was possible, of course, that the same man had smoked a cigarette as well as a cigar, but the different position of the ash was significant. I concluded there were two men, one who had sat smoking a cigar by the fire, one who, in leaning over to ring up the police, had dropped ash from a cigarette on to the writing-table. I concluded that the cigar smoker was the murdered man, and you will remember there was a cigar case in the pocket of the man we found. I think we shall discover that it was the cigarette smoker who killed him, and then compelled Mrs. Fitzroy to send that message. No doubt he had a companion with him, perhaps more than one, and I believe they have been living at No. 6 for some time watching Mrs. Fitzroy. We have heard to-night who Jacob Morrison was, and it was on Wednesday evenings that he came to No. 14. Possibly the watchers had not become aware of his visits until that evening; they may have kept watch in the Hambledon Road, whereas Mrs. Fitzroy unbolted the gate at the bottom of the garden for him as soon as the servant went out. You remember the cigarette end?" "Yes, it was a cheap kind." "And foreign," said Quarles; "Spagnolette Nationale. You can buy them done up in a gray paper case at any shop which sells tobacco in Italy, trenta centesimi for ten, I believe, and you can get them at certain places in Soho. You heard me ask Baker what time it grew dark. I had something to do then, but much to do first. To begin with, I had to find out what days the dust was collected, then to make judicious inquiries about foreigners living in the neighborhood. You see, since Mrs. Fitzroy had been taken away just as she was, and since Baker had only seen that one taxi waiting, I concluded the lady had not been taken far. The only house containing foreigners which seemed to suit my purpose was No. 6, and, when it was dark, I went to examine the dust-bin. There I found two or three of these cases of gray paper. You see, Wigan, the case was comparatively an easy one." "It is a marvel to me that Mrs. Fitzroy was not murdered before we found her," I said. "I knew there was a risk, but we were helpless," Quarles answered. "I had heard of No. 6 and its inhabitants soon after one o'clock, but if we had gone to the house in daylight we should only have hurried a tragedy probably. Besides, I had a theory. These villainous societies almost invariably have methods and rules. If a member is dispatched, some semblance of justice is given to his sentence. I thought the men who had done the kidnapping were not of the first importance, and that Mrs. Fitzroy would not be done away with before she had been confronted with some chief member of the gang. It was very necessary they should wring a confession from her if they could."