"She was lying on the bed with her eyes closed, and did not hear me approach. That helped me. Can you understand my feelings. I was about to destroy something I loved better than life itself, but it was not she who was lying on the bed. She had died before—died by her own act—leaving behind her another woman whose life was a living lie, who was so corrupt and worthless as to be unfit to live. It was that I was going to destroy. I felt no compunction—no remorse. As I placed the muzzle of the revolver against her breast, she opened her eyes in terror, and saw me. I pulled the trigger quickly.... As I did so I heard the dinner gong sound downstairs.
"The muffled report made less noise than the clapping of a pair of hands. I knew that faint sound would not be heard downstairs. She never moved, and I thought she was dead. I bent over the fireplace, shook some caps out of the butt of the pistol, and placed one on the nipple. Then I lit a match and started my prepared fuse. It was an easy matter to place the pistol in position at the top of the grate; the difficulty of recovering it subsequently was not made manifest to me until after my illness, although my previous secret examination of the grate had convinced me that the recoil of the explosion would cause the pistol to fall to the bottom of the chimney behind the grate. When I had placed the pistol in position I turned off the electric light, and opened the window to allow the fumes of the burning wick to escape. Then I hurried downstairs. I was not in the room three minutes altogether. I saw nobody on my way down; nearly everybody had gone in to dinner, but I was in time to sit down with the others.
"I felt quite cold and collected as I sat at the dinner table waiting for the moment of my vengeance. I felt as though I was under the control of some force immensely stronger than myself which held me firm with giant hands while the minutes slowly ebbed away. I am sure there was nothing unusual in my behaviour. I pretended to eat, and joined in the conversation around me.
"The report did not come at the moment I anticipated, but I was not perturbed at the delay. My experiments had taught me the difficulty of fixing an explosion for an exact period. The time was in general approximately the same, but there were reasons which caused a slight difference. The wick always burnt at a uniform rate; the trouble was with the string. Sometimes it was slow in catching. Sometimes the pressure of the string partly extinguished the wick and made combustion slower as it neared the point of contact. Once I tied the string so tight that the wick went out altogether just before reaching the string. But I had taken measures to overcome these little irregularities, and to make sure of the string catching readily I had rubbed a little petrol on it where it crossed the wick.
"But it was the scream before the report which upset my calculations and almost caused me to collapse. When that terrible cry rang out my false strength fled from me, leaving me weak and trembling. I think I should have betrayed myself if the report had not followed so quickly, throwing everybody into the same state of confusion as myself. I do not know how I managed to make my limbs carry me upstairs with the others. I did not know what had happened. My brain refused to act. I was conscious of nothing except that a great wheel seemed turning inside my head, tightening all my nerves to such taut agony that I could hardly refrain from crying aloud.
"What I said or did when I found myself in the bedroom I do not know. When I saw that everything was as I had arranged my mind began swinging like a pendulum towards my revenge, and I struggled to lead the search towards the staircase. But I was unable to move. I was like a man in a dream, encompassed by invisible obstacles. Then the wheel in my head suddenly relaxed, I felt the room and its objects slipping from me, and everything went black.
"You know about my illness. It was not until I was supposed to be recovering that the power of clear thought came back to me. There were days when my brain was numb and powerless, like that of one newly awakened from a terrible nightmare, striving to recall what had happened. Then one day the veil was drawn, and I remembered everything. My aunt was in the room, and I questioned her. She brought Musard to me, and from him I learnt the truth.
"Intuitively I realized what had happened. Hazel Rath had gone to the room for some unknown reason, had seen my wife lying there, and screamed. Then, hardly conscious of what she was doing, she picked up the revolver I had left lying by the bedside, and ran out of the room in fright. I was even able to divine a reason for her silence under the accusation of murder. She felt that nobody would believe her story, especially after the history of her mother's past was brought to light.
"As I turned over what they had told me and realized that my own secret was safe, I thought I saw the way to accomplish my revenge and save Hazel Rath. Up till then the revolver had not been identified as Nepcote's. It seemed to me that the mere disclosure of that fact was sufficient to direct attention to Nepcote and bring to light his movements on that night. But the detective who came to see me about the revolver was too foolish and obstinate to grasp the importance of my information. It was then I decided to go to you. It was daring, perhaps, but it seemed safe enough to me. I was determined to entangle Nepcote, and to free Hazel Rath.
"I told you no more than I had told to the other detective. I had powerful motives for reticence. If I had told you more you would have seen that I had an ulterior reason for directing attention to Nepcote. I had not the least fear that you would discover my secret, but the knowledge, if imparted to you, would have weakened the impression I wanted to convey by suggesting to your mind that I was actuated by hatred of Nepcote. Besides, I did not wish any living being to know of my shame. I believed that I could accomplish my revenge without its ever being known. I thought Nepcote would prefer to perish as the victim of circumstances rather than incur public opprobrium by a defence which he knew would never be believed. The actual facts against him were too strong. He could neither extenuate nor deny them. He could not explain his lying telegrams, his secret return, his presence in the moat-house, his possession of the necklace, the revolver in the bedroom where the body was. Therefore, it was only necessary to give you a starting point, because discovery was inevitable where so much was hidden. I saw to it that the loss of the necklace was discovered after your arrival. That was all you needed to know.