diameter. Nevertheless, such a constellation as the Blair emeralds was not to be disposed of very easily, and I surmised no attempt had been made either to sell them or to raise money upon them. Now that I had removed myself from the glamour of her presence, I began to suspect that the young lady, after all, although undoubtedly possessing the brilliancy of her jewels, retained also something of their hardness. There had been no expression of sympathy for the discarded friend; it was too evident, recalling what had latterly passed between us, that the young woman's sole desire, and a perfectly natural desire, was to recover her missing treasure. There was something behind all this which I could not comprehend, and I resolved in the morning to question the Marquis of Blair as shrewdly as he cared to allow. Failing him, I should cross-question the niece in a somewhat dryer light than that which had enshrouded me during this interesting evening. I care not who knows it, but I have been befooled more than once by a woman, but I determined that in clear daylight I should resist the hypnotising influence of those glorious eyes. Mon Dieu! Mon Dieu! how easy it is for me to make good resolutions when I am far from temptation!
It was ten o'clock next morning when I was admitted to the study of the aged bachelor Marquis of Blair. His keen eyes looked through and through me as I seated myself before him.
'Well!' he said shortly.
'My lord,' I began deliberately, 'I know nothing more of the case than was furnished by the accounts I have read in the newspapers. Two months have elapsed since the robbery. Every day that passed made the detection of the criminal more difficult. I do not wish to waste either my time or your money on a forlorn hope. If, therefore, you will be good enough to place me in possession of all the facts known to you, I shall tell you at once whether or not I can take up the case.'
'Do you wish me to give you the name of the criminal?' asked his lordship.
'Is his name known to you?' I asked in return.
'Yes. John Haddon stole the necklace.'
'Did you give that name to the police?'
'Yes.'
'Why didn't they arrest him?'
'Because the evidence against him is so small, and the improbability of his having committed the crime is so great.'
'What is the evidence against him?'
His lordship spoke with the dry deliberation of an aged solicitor.
'The robbery was committed on the night of October the fifth. All day there had been a heavy rain, and the grounds were wet. For reasons into which I do not care to enter, John Haddon was familiar with this house, and with our grounds. He was well known to my servants, and, unfortunately, popular with them, for he is an openhanded spendthrift. The estate of his elder brother, Lord Steffenham, adjoins my own to the west, and Lord Steffenham's house is three miles from where we sit. On the night of the fifth a ball was given in the mansion of Lord Steffenham, to which, of course, my niece and myself were invited, and which invitation we accepted. I had no quarrel with the elder brother. It was known to John Haddon that my niece intended to wear her necklace of emeralds. The robbery occurred at a time when most crimes of that nature are committed in country houses, namely, while we were at dinner, an hour during which the servants are almost invariably in the lower part of the house. In October the days are getting short. The night was exceptionally dark, for, although the rain had ceased, not a star was visible. The thief placed a ladder against the sill of one of the upper windows, opened it, and came in. He must have been perfectly familiar with the house, for there are evidences that he went direct to the boudoir where the jewel case had been carelessly left on my niece's dressing table when she came down to dinner. It had been taken from the strong room about an hour before. The box was locked, but, of course, that made no difference. The thief wrenched the lid off, breaking the lock, stole the necklace, and escaped by the way he came.'
'Did he leave the window open, and the ladder in place?'
'Yes.'
'Doesn't that strike you as very extraordinary?'
'No. I do not assert that he is a professional burglar, who would take all the precautions against the discovery that might have been expected from one of the craft. Indeed, the man's carelessness in going straight across the country to his brother's house, and leaving footsteps in the soft earth, easily traceable almost to the very boundary fence, shows he is incapable of any serious thought.'
'Is John Haddon rich?'
'He hasn't a penny.'
'Did you go to the ball that night?'
'Yes, I had promised to go.'
'Was John Haddon there?'
'Yes; but he appeared late. He should have been present at the opening, and his brother was seriously annoyed by his absence. When he did come he acted in a wild and reckless manner, which gave the guests the impression that he had been drinking. Both my niece and myself were disgusted with his actions.'
'Do you think your niece suspects him?'
'She certainly did not at first, and was indignant when I told her, coming home from the ball, that her jewels were undoubtedly in Steffenham House, even though they were not round her neck, but latterly I think her opinion has changed.'
'To go back a moment. Did any of your servants see him prowling about the place?'
'They all say they didn't, but I myself saw him, just before dusk, coming across the fields towards this house, and next morning we found the same footprints both going and coming. It seems to me the circumstantial evidence is rather strong.'
'It's a pity that no one but yourself saw him. What more evidence are the authorities waiting for?'
'They are waiting until he attempts to dispose of the jewels.'
'You think, then, he has not done so up to date?'
'I think he will never do so.'
'Then why did he steal them?'
'To prevent the marriage of my niece with Jonas Carter, of Sheffield, to whom she is betrothed. They were to be married early in the New Year.'
'My lord, you amaze me. If Mr. Carter and Lady Alicia are engaged, why should the theft of the jewels interfere with the ceremony?'
'Mr. Jonas Carter is a most estimable man, who, however, does not move in our sphere of life. He is connected with the steel or cutlery industry, and is a person of great wealth, rising upwards of a million, with a large estate in Derbyshire, and a house fronting Hyde Park, in London. He is a very strict business man, and both my niece and myself agree that he is also an eligible man. I myself am rather strict in matters of business, and I must admit that Mr. Carter showed a very generous spirit in arranging the preliminaries of the engagement with me. When Alicia's father died he had run through all the money he himself possessed or could borrow from his friends. Although a man of noble birth, I never liked him. He was married to my only sister. The Blair emeralds, as perhaps you know, descend down the female line. They, therefore, came to my niece from her mother. My poor sister had long been disillusioned before death released her from the titled scamp she had married, and she very wisely placed the emeralds in my custody to be held in trust for her daughter. They constitute my niece's only fortune, and would produce, if offered in London today, probably seventy-five or a hundred thousand pounds, although actually they are not worth so much. Mr. Jonas Carter very amiably consented to receive my niece with a dowry of only fifty thousand pounds, and that money I offered to advance, if I was allowed to retain the jewels as security. This was arranged between Mr. Carter and myself.'
'But surely Mr. Carter does not refuse to carry out his engagement because the jewels have been stolen?'
'He does. Why should he not?'
'Then surely you will advance the fifty thousand necessary?'
'I will not. Why should I?'
'Well, it seems to me,' said I, with a slight laugh, 'the young man has very definitely checkmated both of you.'
'He has, until I have laid him by the heels, which I am determined