"Thank you," said she, "but I claim no monopoly on deductions so simple as these. I have not the least doubt that not only yourself but every member of the force has made the same. But there is a little matter which may have escaped the police, may even have escaped you. To that I would now call your attention since through it I have been enabled, after a little necessary groping, to reach the open. You remember the one large blotch on the upper floor where the man dropped the wallet? That blotch, more or less commingled with a fainter one, possessed great significance for me from the first moment I saw it. How came his foot to bleed so much more profusely at that one spot than at any other? There could be but one answer: because here a surprise met him--a surprise so startling to him in his present state of mind, that he gave a quick spring backward, with the result that his wounded foot came down suddenly and forcibly instead of easily as in his previous wary tread. And what was the surprise? I made it my business to find out, and now I can tell you that it was the sight of a woman's face staring upon him from the neighbouring house which he had probably been told was empty. The shock disturbed his judgment. He saw his crime discovered--his guilty secret read, and fled in unreasoning panic. He might better have held on to his wits. It was this display of fear which led me to search after its cause, and consequently to discover that at this especial hour more than one person had been in the Shaffer house;that, in fact, a marriage had been celebrated there under circumstances as romantic as any we read of in books, and that this marriage, privately carried out, had been followed by an immediate voyage of the happy couple on one of the White Star steamers. With the rest you are conversant. I do not need to say anything about what has followed the sending of that Marconi.""But I am going to say something about your work in this matter, Miss Strange. The big detectives about here will have to look sharp if--""Don't, please! Not yet." A smile softened the asperity of this interruption. "The man has yet to be caught and identified. Till that is done I cannot enjoy any one's congratulations. And you will see that all this may not be so easy. If no one happened to meet the desperate wretch before he had an opportunity to retie his shoe-laces, there will be little for you or even for the police to go upon but his wounded foot, his undoubtedly carefully prepared alibi, and later, a woman's confused description of a face seen but for a moment only and that under a personal excitement precluding minute attention. I should not be surprised if the whole thing came to nothing."But it did not. As soon as the description was received from Mrs.

Amidon (a description, by the way, which was unusually clear and precise, owing to the peculiar and contradictory features of the man), the police were able to recognize him among the many suspects always under their eye. Arrested, he pleaded, just as Miss Strange had foretold, an alibi of a seemingly unimpeachable character; but neither it, nor the plausible explanation with which he endeavoured to account for a freshly healed scar amid the callouses of his right foot, could stand before Mrs. Amidon's unequivocal testimony that he was the same man she had seen in Mrs. Doolittle's upper room on the afternoon of her own happiness and of that poor woman's murder.

The moment when, at his trial, the two faces again confronted each other across a space no wider than that which had separated them on the dread occasion in Seventeenth Street, is said to have been one of the most dramatic in the annals of that ancient court room.