For the third time Margaret Wilmot was disappointed in the hope of seeing Henry Dunbar. Clement Austin had on the previous evening told her of the banker’s intended visit to the office in St. Gundolph Lane, and the young music-mistress had made hasty arrangements for the postponement of her usual duties, in order that she might go to the City to see Henry Dunbar.

“He will not dare to refuse you,” Clement Austin said; “for he must know that such a refusal would excite suspicion in the minds of the people about him.”

“He must have known that at Winchester, and yet he avoided me there,” answered Margaret Wilmot; “he must have known it when he refused to see me in Portland Place. He will refuse to see me to-day, if I ask for an interview with him. My only chance will be the chance of an accidental meeting with Him. Do you think that you can arrange this for me, Mr. Austin?”

Clement Austin readily promised to bring about an apparently accidental meeting between Margaret and Mr. Dunbar, and this is how it was that Joseph Wilmot’s daughter had waited in the office in St. Gundolph Lane. She had arrived only five minutes after Mr. Dunbar entered the banking-house, and she waited very patiently, very resolutely, in the hope that when Henry Dunbar returned to his carriage she might snatch the opportunity of speaking to him, of seeing his face, and discovering whether he was guilty or not.

She clung to the idea that some indefinable expression of his countenance would reveal the fact of his guilt or innocence. But she could not dispossess herself of the belief that he was guilty. What other reason could there be for his persistent avoidance of her?

But, for the third time, she was baffled; and she went home very despondently, haunted by the image of her dead father; while Henry Dunbar went back to the Clarendon in a common hack cab, which he picked up in Cornhill.

Margaret Wilmot found one of her pupils waiting in the pretty little parlour in the cottage at Clapham, and she was obliged to sit down to the piano and listen to a fantasia, very badly played, keeping sharp watch upon the pupil’s fingers, for an hour or so, before she was free to think her own thoughts.

Margaret was very glad when the lesson was over. The pupil was a very vivacious young lady, who called her music-mistress “dear,” and would have been glad to waste half an hour or so in an animated conversation about the last new style in bonnets, or the shape of the fashionable winter mantle, or the popular novel of the month. But Margaret’s pale face seemed a mute appeal for compassion; so Miss Lamberton drew on her gloves, settled her bonnet before the glass over the mantel-piece, and tripped away.

Margaret sat by the little round table, with an open book before her. But she could not read, though the volume was one that had been lent her by Clement, and though she took a peculiar pleasure in reading any book that was a favourite of his. She did not read; she only sat with her eyes fixed, and her face very pale, in the dim light of two candles that flickered in the draught from the window.

She was aroused from her despondent reverie by a double knock at the door below, and presently the neat little maid-servant ushered Mr. Austin into the room.

Margaret started up, a little confused at the advent of this unexpected visitor. It was the first time that Clement had ever called upon her alone. He had often been her guest; but, until to-night, he had always come under his mother’s wing to see the pretty music-mistress.

“I am afraid I startled you, Miss Wilmot,” he said.

“Oh, no; not at all,” answered Margaret; “I was sitting here, quite idle, thinking ——”

“Thinking of your failure of to-day, I suppose?”

“Yes.”

There was a pause, during which Margaret seated herself once more by the little table, while Clement Austin walked up and down the room thinking.

Presently he stopped suddenly, with his elbow leaning upon the corner of the mantel-piece, opposite Margaret, and looked down at the girl’s thoughtful face. She had blushed when the cashier first entered the room; but she was very pale now.

“Margaret,” said Clement Austin — it was the first time he had called his mother’s protégée by her Christian name, and the girl looked up at him with a surprised expression — “Margaret, that which happened to-day makes me think that your conviction is only the horrible truth, and that Henry Dunbar, the sole surviving kinsman of those two men whom I learnt to honour and revere long ago, when I was a mere boy, is indeed guilty of your father’s death. If so, the cause of justice demands that this man’s crime should be brought to light. I am something of Shakspeare’s opinion; I cannot but believe that ‘murder will out,’ somehow or other, sooner or later. But I think that, in this business, the police have been culpably supine. It seems as if they feared to handle the case to closely, lest the clue they followed should lead them to Henry Dunbar.”

“You think they have been, bribed?”

“No; I don’t think that. There seems to be a popular belief, all over the world, that a man with a million of money can do no wrong. I don’t believe the police have been culpable; they have only been faint-hearted. They have suffered themselves to be discouraged by the difficulties of the case. Other crimes have been committed, other work has arisen for them to do, and they have been obliged to abandon an investigation which seemed hopeless. This is how criminals escape — this is how murderers are suffered to be at large; not because discovery is impossible, but because it can only be effected by a slow and wearisome process in which so few men have courage to persevere. While the country is ringing with the record of a great crime — while the murderer is on his guard night and day, waking and sleeping — the police watch and work: but by-and-by, when the crime is half forgotten — when security has made the criminal careless — when the chances of detection are ten-fold — the police have grown tired, and there is no eye to watch the guilty man’s movements. I know no............