“So I pointed it carefully from the best view I could get from there, and tried again. “Just as I pushed the button, I heard cries on the street, and, looking down, saw a man lying on the sidewalk, and several others running toward him. “Of course, I went down to see what was the matter. “Later I went back, and as soon as possible after supper, I developed my second plate. “I didn’t bring that with me, for it wouldn’t interest you. But it came out so good that I thought I might as well see what I had caught on the first plate, when the thing went off before I knew. “That picture in your hand was what I caught.” He paused, but Nick said nothing, and the young man added: “I had heard your name mentioned in connection with the matter, and, as people said it was a case of suicide, I thought I ought to show you what I had caught.” Nick drew a long breath. “Well!” he said, “for once the brass band has been useful. I wanted to work unknown, but the fact that I am known to be on the case has brought me a piece of evidence that otherwise might never have been discovered.” Again he looked at the picture. “This lets Low out of it,” he murmured. Kerr’s theory was that Low had made a mad rush for the clergyman as soon as he entered the room, pushed him from the window, and then hurried out and down the stairs. The amateur’s photograph showed not only the unfortunate clergyman falling headforemost toward the sidewalk, but above him the forms of two men at the window. They were not looking out, but rather in the act of dodging back. These two were outlined very dimly, but the picture was clear enough to show that there were two of them, and that their arms were half raised, as would be natural if they had just thrown a body away from them. Unluckily, the faces were not at all distinct, and try as he would, and Nick used his magnifying glass, he could not make them out to his satisfaction. While he was still studying it, there came a knock at the door, and Patsy hurried in. “What do you think of the picture, chief?” Patsy asked, with a show of some excitement. “It’s a good piece of evidence,” responded Nick; “if only this young man had had a little more luck! We could get along without the picture of Judson, if we only had a clean-cut picture of the two murderers.” “That’s all right,” said Patsy confidently, “I know who they are.” Nick looked quickly at his assistant. Then he turned to the photographer. “Will you leave this with us?” he asked. “I shall see that you are well paid for it.” “Oh! I don’t care for any pay,” replied the young man. “I shall be glad if it helps you. Good night.” He left them, and Patsy made his report. “I laid for Claymore, as you told me,” he said, “and after chasing him around town for a while, I found at last that he had gone to the office of the oil company. He spent the whole evening there.” “Was his partner with him?” “No; but I learned his name.” “What was it?” “George Donnelson.”