and again, and would not be denied in spite of many improbabilities, and many strange things with which the book was full; in spite, also, of the varying, uncertain handwriting and style of the message. This one thought was, "This woman is not insane."

While the young official was pondering over the problem, Muller entered as quietly as ever, bowed, put his hat and cane in their places, and shook the snow off his clothing. He was evidently pleased about something. Kurt von Mayringen did not notice his entrance. He was again at the desk with the open book before him, staring at the mysterious words, "How I was murdered."

"It is a woman, a lady of position. And if she is mad, then her madness certainly has method." Muller said these words in his usual quiet way, almost indifferently. The young commissioner started up and snatched for the fine white handkerchief which the detective handed him. A strong sweet perfume filled the room. "It is hers?" he murmured.

"It is hers," said Muller. "At least we can take that much for granted, for the handkerchief bears the same monogram, A. L., which is on the notebook."

Commissioner von Mayringen rose from his chair in evident excitement. "Well?" he asked.

It was a short question, but full of meaning, and one could see that he was waiting in great excitement for the answer. Muller reported what he had discovered. The commissioner thought it little enough, and shrugged his shoulders impatiently when the other had finished.

Muller noticed his chief's dissatisfaction and smiled at it. He himself was quite content with what he had found.

"Is that all?" murmured the commissioner, as if disappointed.

"That is all," repeated the detective calmly, and added, "That is a good deal. We have here a closely written notebook, the contents of which, judging by your excitement, are evidently important. We have also a handkerchie