Shaking off the feelings that oppressed me, I went quickly upstairs. I had no difficulty in finding the room of the tragedy. On the day the body was discovered it had rained heavily, and large muddy boots had trampled the uncarpeted floor in every direction. I wondered if the murderer had left any footmarks the previous day. It was likely that the police would be reticent on the subject if he had, but on consideration I decided it was unlikely. The weather had been fine and dry. There was nothing of interest about the room. It was almost square with two big bay windows, plain white walls and a bare floor, the boards being stained round the edges where the carpet had ceased. I searched it carefully, but there was not so much as a pin lying about. The gifted young detective did not seem likely to discover a neglected clue.
I had brought with me a pencil and notebook. There did not seem much to note, but I duly dotted down a brief sketch of the room to cover my disappointment at the failure of my quest. As I was in the act of returning the pencil to my bag, it slipped from my fingers and rolled along the floor.
The Mill House was really old, and the floors were very uneven. The pencil rolled steadily, with increasing momentum, until it came to rest under one of the windows. In the recess of each window there was a broad window-seat, underneath which there was a cupboard. My pencil was lying right against the cupboard door. The cupboard was shut, but it suddenly occurred to me that if it had been open my pencil would have rolled inside. I opened the door, and my pencil immediately rolled in and sheltered modestly in the farthest corner. I retrieved it, noting as I did so that owing to the lack of light and the peculiar formation of the cupboard one could not see it, but had to feel for it. Apart from my pencil the cupboard was empty, but being thorough by nature I tried the one under the opposite window.
At first sight, it looked as though that also was empty, but I grubbed about perseveringly, and was rewarded by feeling my hand close on a hard paper cylinder which lay in a sort of trough, or depression, in the far corner of the cupboard. As soon as I had it in my hand, I knew what it was. A roll of kodak films. Here was a find!
I realized, of course, that these films might very well be an old roll belonging to Sir Eustace Pedler which had rolled in here and had not been found when the cupboard was emptied. But I did not think so. The red paper was far too fresh-looking. It was just as dusty as it would have been had it laid there for two or three days—that is to say, since the murder. Had it been there for any length of time, it would have been thickly coated.
Who had dropped it? The woman or the man? I remembered that the contents of her handbag had appeared to be intact. If it had been jerked open in the struggle and the roll of films had fallen out, surely some of the loose money would have been scattered about also? No, it was not the woman who had dropped the films.
I sniffed suddenly and suspiciously. Was the smell of moth balls becoming an obsession with me? I could swear that the roll of films smelt of it also? I held them under my nose. They had, as usual, a strong smell of their own, but apart from that I could clearly detect the odour I disliked so much. I soon found the cause. A minute shred of cloth had caught on a rough edge of the centre wood, and that shred was stron............