"Has it occurred to you that she may have left not intending to return?" I asked. "Well, no," he responded. "I scarcely think she has flown, or her daughter would have secured the contents of her escritoire. She evidently believes her secret quite safe, and is therefore entirely fearless." The Richmond Road with its many trees was pleasant in that hour when the clear rose-flush of dawn was still in the sky, and as we walked the cool wind rose fragrant with the smell of the wet grass, refreshing after the foetid atmosphere of that closed room and its gruesome occupant. We chatted on, discussing the startling discoveries we had made, he giving me certain instructions, until we got to the station and entered a compartment. The latter being crowded with workmen, further conversation on the subject was precluded. Soon after six I returned to Grey's Inn, and making an excuse to Dick for my absence, snatched an hour's sleep before going down to my office. My heart was hard; my blood fire. Fate had been merciless. "I began to think something had happened, old chap," Dick had said when I had entered his room and awakened him. He sat up in bed and looked at me rather strangely, I thought. Then he added: "You don't seem as though you've had much sleep, wherever you've been." In my excitement I had quite forgotten that my clothes were dirty and torn, and my face unwashed, and I fancied that his pointed remark caused a slight flush to rise to my cheeks. How I performed my duties that morning I scarcely knew, for my brain was in a whirl with the amazing discoveries of the past night, I loved Eva, yet the contents of those concealed drawers were sufficient in themselves to convince Boyd of her guilt. A fearful and perpetual dread seized me lest she should be arrested. Boyd's method of work was, I knew, always bold and decisive. A detective, to be successful, must act without hesitation. In this affair he had obtained evidence which, from every point of view, proved but one fact, and one alone--her guilt. Indeed, I now remembered with bitterness how she had to me openly declared herself guilty; how she had prophesied that one day I should hate all mention of her name. Did it not seem quite clear, too, that this very drug which I had found in the small wooden box, the drug which had been instantly fatal to the poor brute upon which we tried it, was the same which had been administered to me by her hand? When I thought of that I felt glad that I had assisted my friend of Scotland Yard, and that with my own hands had unearthed evidence which must lead to her conviction. Her arrest was, I knew from my friend's remarks, only a matter of days, perhaps, indeed, of hours.