It was a relief, consequently, when I reached its corner, to find no lights in the building. The girl had kept her word. Assured of that, I looked at the house curiously. It was one of the largest in the city, not wide, but running far back along the side street; a small yard with a low iron fence and a garage, completed the property. The street lights left the back of the house in shadow, and as I stopped in the shelter of the garage, I was positive that I heard some one working with a rear window of the empty house. A moment later the sounds ceased and muffled footsteps came down the cement walk. The intruder made no attempt to open the iron gate; against the light I saw him put a leg over the low fence, follow it up with the other, and start up the street, still with peculiar noiselessness of stride. He was a short, heavy-shouldered fellow in a cap, and his silhouette showed a prodigious length of arm. I followed, I don't mind saying in some excitement. I had a vision of grabbing him from behind and leading him--or pushing him, under the circumstances, in triumph to the police station, and another mental picture, not so pleasant, of being found on the pavement by some passer-by, with a small punctuation mark ending my sentence of life. But I was not apprehensive. I even remember wondering humorously if I should overtake him and press the cold end of my silver mounted fountain pen into the nape of his neck, if he would throw up his hands and surrender. I had read somewhere of a burglar held up in a similar way with a shoe-horn. Our pace was easy. Once the man just ahead stopped and lighted a cigarette, and the odor of a very fair Turkish tobacco came back to me. He glanced back over his shoulder at me and went on without quickening his pace. We met no policemen, and after perhaps five minutes walking, when the strain was growing tense, my gentleman of the rubber-soled shoes swung abruptly to the left, and--entered the police station! I had occasion to see Davidson many times after that, during the strange development of the Fleming case; I had the peculiar experience later of having him follow me as I had trailed him that night, and I had occasion once to test the strength of his long arms when he helped to thrust me through the transom at the White Cat, but I never met him without a recurrence of the sheepish feeling with which I watched him swagger up to the night sergeant and fall into easy conversation with the man behind the desk. Standing in the glare from the open window, I had much the lost pride and self contempt of a wet cat sitting in the sun. Two or three roundsmen were sitting against the wall, lazily, helmets off and coats open against the warmth of the early spring night. In a back room others were playing checkers and disputing noisily. Davidson's voice came distinctly through the open windows.