Though she tried to open the two doors of the room, she discovered they were locked on the outside. She yelled as loud as she could, but the approaching storm and the high wind drowned her voice. And then when she thought it would be useless to cry out again, she heard the door open. A moment later the door leading into the room was swung aside, and the lights flashed on. Just what happened after that she did not know. There was a short moment when, to her horror, she again saw the minister—saw him creep over the floor in her direction—and then she said she must have fainted again. We said nothing, and then with an appealing look, which took us all in, the girl asked: “I have just one faint recollection. As I fainted the last time, the minister was saying something about a sacrifice. What did he mean?” It was Bartley who spoke, and his words were, of course, untrue: “I think you must have been mistaken,” was his short reply. The girl shook her head as if in doubt, but settled back in her chair. In the silence there came the voice of the chief: “How about the murder of the gardener?” “That's more simple,” was the answer. “You must, of course, understand, Chief, that when the minister realized what he had done, he was torn between two conflicting emotions. First, of course, was the thought that he had done a good deed—he had saved his God from blasphemy. That idea grew upon him. It did not, however, do away with the other feeling. After all, he had committed a murder, and he knew it. In the few days after the crime he must have been fast approaching actual insanity. “Then there came a startling fact. He was told that Patton would complete the book—the book which would give the world Warren's discovery. He had killed a man to prevent that book being written, and his crime was in vain. The world collapsed for him at the moment he realized that his crime had been useless.” “But he did not know Patton,” barked out the chief. “Yes, he did,” replied Carter. “I introduced them this morning.” Bartley took up the thought. “Yes, he had met him. That's why he made his mistake. He knew the suit Patton was wearing. When he saw the back of the gardener as he turned to escape from the room, he thought it was Patton and shot him. In build, height and general appearance they were about the same.” “No doubt it's all so,” retorted the chief, “but what I can't understand is this: What did the gardener see, what was it made him turn, as you say, to leave the library?”