"'I don't wonder that you are surprised,' said she, and I could see that her fingers were trembling as she undid the fastenings of her mantle. 'Why, I never remember having done such a thing in my life before. The fact is, that I felt as though I were choking, and had a perfect longing for a breath of fresh air. I really think that I should have fainted if I had not gone out. I stood at the door for a few minutes, and now I am quite myself again.' "All the time that she was telling me this story she never once looked in my direction, and her voice was quite unlike her usual tones. It was evident to me that she was saying what was false. I said nothing in reply, but turned my face to the wall, sick at heart, with my mind filled with a thousand venomous doubts and suspicions. What was it that my wife was concealing from me? Where had she been during that strange expedition? I felt that I should have no peace until I knew, and yet I shrank from asking her again after once she had told me what was false. All the rest of the night I tossed and tumbled, framing theory after theory, each more unlikely than the last. "I should have gone to the City that day, but I was too perturbed in my mind to be able to pay attention to business matters. My wife seemed to be as upset as myself, and I could see from the little questioning glances which she kept shooting at me, that she understood that I disbelieved her statement and that she was at her wits' ends what to do. We hardly exchanged a word during breakfast, and immediately afterwards I went out for a walk that I might think the matter out in the fresh morning air. "I went as far as the Crystal Palace, spent an hour in the grounds, and was back in Norbury by one o'clock. It happened that my way took me past the cottage, and I stopped for an instant to look at the windows and to see if I could catch a glimpse of the strange face which had looked out at me on the day before. As I stood there, imagine my surprise, Mr. Holmes, when the door suddenly opened and my wife walked out! "I was struck dumb with astonishment at the sight of her, but my emotions were nothing to those which showed themselves upon her face when our eyes met. She seemed for an instant to wish to shrink back inside the house again, and then, seeing how useless all concealment must be, she came forward with a very white face and frightened eyes which belied the smile upon her lips. "'Oh, Jack!' she said, 'I have just been in to see if I can be of any assistance to our new neighbours. Why do you look at me like that, Jack? You are not angry with me?' "'So,' said I, 'this is where you went during the night?' "'What do you mean?' she cried. "'You came here. I am sure of it. Who are these people that you should visit them at such an hour?' "'I have not been here before.'