The beauty and high spirit of Diana made so deep an impression on Lucian that he determined to aid her by every means in his power in searching for the assassin of her father. As yet Denzil had reached the age of twenty-five without having been attracted in any marked degree towards woman-kind; or, to put it more precisely, he had not yet been in love. But now it seemed that the hour which comes to all of Adam's sons had come to him; for on leaving Diana he thought of nothing else but her lovely face and charming smile, and, until he met her again, her image was never absent from his mind.

He took but a languid interest in his daily business or social pursuits, and, wrapped up in inwardly contemplating the beauties of Diana, he appeared to move amongst his fellow-men like one in a dream. And dreamer he was, for there was no substantial basis for his passion.

Many people—particularly those without imagination—scoff at the idea that love can be born in a moment, but such is often the case, for all their ill-advised jibes. A man may be brought into contact with the loveliest and most brilliant of women, yet remain heart-whole; yet unexpectedly a face—not always the most beautiful—will fire him with sudden fervour, even against his better judgment. Love is not an affair of reason, to be clipped and measured by logic and calculation; but a devouring, destroying passion, impatient of restraint, and utterly regardless of common sense. It is born of a look, of a smile, of a sigh, of a word; it springs up and fructifies more speedily than did Jonah's gourd, and none can say how it begins or how it will end. It is the ever old, ever new riddle of creation, and the more narrowly its mystery is looked into the more impossible does it become of solution. The lover of to-day, with centuries of examples at his back, is no wiser in knowledge than was his father Adam.

Although Lucian was thus stricken mad after the irrational methods of Cupid, he had sufficient sense not to examine too minutely into the reasons for this sudden passion. He was in love, and admitting as much to himself, there was an end of all argument. The long lane of his youthful and loveless life had turned in another direction at the signpost of a woman's face, and down the new vista the lover saw flowering meadows, silver streams, bowers of roses, and all the landscape of Arcadia. He was a piping swain and Diana a complaisant shepherdess; but they had not yet entered into the promised Arcadia, and might never do so unless Diana was as kindly as he wished her to be.

Lucian was in love with Diana, but as yet he could not flatter himself that she was in love with him, so he resolved to win her affection—if it was free to be bestowed—by doing her will, and her will was to revenge the death of her father. This was hardly a pleasant task to Lucian in his then peace-with-all-the-world frame of mind; but seeing no other way to gain a closer intimacy with the lady of his love, he took the bitter with the sweet, and set his shoulder to the wheel.

The next morning, therefore, Lucian called on the landlord of No. 13 and requested the keys of the house. But it appeared that these were not in the landlord's keeping at the moment.

"I gave them to Mrs. Kebby, the charwoman," said Mr. Peacock, a retired grocer, who owned the greater part of the square. "The house is in such a state that I thought I'd have it cleaned up a bit."

"With a view to a possible tenant, I suppose?"

"I don't know," replied Peacock, with a rueful shake of his bald head, "although I'm hoping against hope. But what with the murder and the ghost, there don't seem much chance of letting it. What might you be wanting in No. 13, Mr. Denzil?"

"I wish to examine every room, to find, if possible, a clue to this crime," explained Lucian, suppressing the fact that he was to have a companion.

"You'll find nothing, sir. I've looked into every room myself. However, you'll find Mrs. Kebby cleaning up, and she'll let you in if you ring the bell. You aren't thinking of taking the house yourself, I suppose?" added Peacock wishfully.

"No, thank you. My nerves are in good order just now; I don't want to upset them by inhabiting a house with so evil a reputation."

"Ah! that's what every one says," sighed the grocer. "I wish that Berwin, or Vrain, or whatever he called himself, had chosen some other place to be killed in."

"I'm afraid people who meet with unexpected deaths can't arrange these little matters beforehand," said Lucian drily, and walked away, leaving the unfortunate landlord still lamenting over his unlucky possession of a haunted and blood-stained mansion.

Before going to No. 13, Lucian walked down the street leading into Geneva Square, in order to meet Diana, who was due at eleven o'clock. Punctual as the barrister was, he found that Miss Vrain, in her impatience, was before him; for he arrived to see her dismiss her cab at the end of the street, and met her half way down.

His heart gave a bound as he saw her graceful figure, and he felt the hot blood rise to his cheeks as he advanced to meet her.

Diana, quite unconscious of having, like her namesake, the moon, caused this springtide of the heart, could not forbear a glance of surprise, but greeted her coadjutor without embarrassment and with all friendliness. Her thoughts were too taken up with her immediate task of exploring the scene of the crime to waste time in conjecturing the reason of the young man's blushes. Yet the instinct of her sex might have told her the truth, and probably it would have but that it was blunted, or rather not exercised, by reason of her preoccupation.

"Have you the key, Mr. Denzil?" said she eagerly.

"No; but I have seen the landlord, and he has given us permission to go over the house. A charwoman who is cleaning up the place will let us in."

"A charwoman," repeated Miss Vrain, stopping short, "and cleaning up the house! Is it, then, about to receive a new tenant?"

"Oh, no; but the landlord wishes it to be aired and swept; to keep it in some degree of order, I presume."

"What is the name of this woman?"

"Mrs. Kebby."

"The same mentioned in the newspaper reports as having waited on my unhappy father?"

"The same," replied Lucian, with some hesitation; "but I would advise you, Miss Vrain, not to question her too closely about your father."

"Why not? Ah! I see; you think her answers about his drinking habits will give me pain. No matter; I am prepared for all that. I don't blame him so much as those who drove him to intemperance. Is this the house?" she said, looking earnestly at the neglected building before which they were standing.

"Yes," replied Lucian, ringing the bell, "it was in this house that your father came to his untimely end. And here is Mrs. Kebby."

That amiable crone had opened the door while the young man was speaking, and now stood eyeing her visitors with a blear-eyed look of dark suspicion.

"What is't ye want?" she demanded, with a raven-like croak.

"Mr. Peacock has given this lady and myself permission to go over the house," responded Lucian, trying to pass.

"And how do I know if he did?" grumbled Mrs. Kebby, blocking the way.

"Because I tell you so."

"And because I am the daughter of Mr. Vrain," said Diana, stepping forward.

"Lord love ye, miss! are ye?" croaked Mrs. Kebby, stepping aside. "And ye've come to look at your pa's blood, I'll be bound."

Diana turned pale and shuddered, but controlling herself by an effort of will, she swept past the old woman and entered the sitting-room. "Is this the place?" she asked Lucian, who was holding the door open.

"That it is, miss," cried the charwoman, who had hobbled after them, "and yonder is the poor gentleman's blood; it soaked right through the carpet," added Mrs. Kebby, with ghoulish relish. "Lor! 'ow it must 'ave poured out!"

"Hold your tongue, woman!" said Lucian roughly, seeing that Diana looked as though about to faint. "Get on with your work!"

"I'm going; it's upstairs I'm sweeping," growled the crone, retreating. "You'll bring me to you if ye give a holler. I'll show ye round for a shilling."

"You shall have double if you leave us alone," said Lucian, pointing to the door.

Mrs. Kebby's blear eyes lighted up, and she leered amiably at the couple.

"I dessay it's worth two shillings," she said, chuckling hoarsely. "Oh, I'm not so old but what I don't know two turtle doves. He! he! To kiss over yer father's blood! Lawks! what a match 'twill be! He! he!"

Still laughing hoarsely, Mrs. Kebby, in the midst of her unholy joy, was pushed out of the door by Lucian, who immediately afterwards turned to see if Diana had overheard her ill-chosen and ominous words. But Miss Vrain, with a hard, white face, was leaning against the wall, and gave no sign of such knowledge. Her eyes were fixed on a dull-looking red stain of a dark hue, irregular in shape, and her hands the while were pressed closely against her bosom, as though she felt a cruel pain in her heart. With bloodless cheek and trembling lip the daughter looked upon the evidence of her father's death. Lucian was alarmed by her unnatural pallor.

"Miss Vrain!" he exclaimed, starting forward, "you are ill! Let me lead you out of this house."

"No!" said Diana, waving him back. "Not till we examine every inch of it; don't speak to me, please. I wish to use my eyes rather than my tongue."

Denzil, both as a lover and a friend, respected this emotion of the poor young lady, so natural under the circumstances; and in silence conducted her from room to room. All were empty and still dusty, for Mrs. Kebby's broom swept sufficiently light, and the footfalls of the pair echoed hollowly in the vast spaces.

Diana looked into every corner, examined every fireplace, attempted every window, but in no place could she find any extraneous object likely to afford a clue to the crime. They went down into the basement and explored the kitchen, the servant's parlour, the scullery, and the pantry, but with the same unsatisfactory result. The kitchen door, which led out into the back yard, showed signs of having been lately opened; but when Diana drew Lucian's attention to this fact, as the murderer having possibly entered thereby, he assured her that it had only lately been opened by the detective, Link, when he was searching for clues.

"I saw this door," added Lucian, striking it with his cane, "a week before your father was killed. He showed it to me himself, to prove that no one could have entered the house during his absence; and I was satisfied then, from the rusty condition of the bolts, and the absence of the key in the lock, that the door had not been opened—at all events, during his tenancy."

"Then how could those who killed him have entered?"

"That is what I wish to learn, Miss Vrain. But why do you speak in the plural?"

"Because I believe that Lydia and Ferruci killed my father."

"But I have proved to you that Mrs. Vrain remained at Bath."

"I know it," replied Diana quickly, "but she sent Ferruci up to kill my father, and I speak in the plural because I think—in a moral sense—she is as guilty as the Italian."

"That may be, Miss Vrain, but as yet we have not proved their guilt."

Diana made no answer, but, followed by Lucian, ascended to the upper part of the house, where they found Mrs. Kebby sweeping so vigorously that she had raised a kind of dust storm. As soon as she saw the couple she hobbled towards them to cajole them, if possible, into giving her money.

For a few moments Diana looked at her haughtily, not relishing the familiarity of the old dame, but unexpectedly she stepped forward with a look of excitement.

"Where did you get that ribbon?" she asked Mrs Kebby, pointing to a scrap of personal adornment on the neck of the rusty old creature.

"This?" croaked Mrs. Kebby. "I picked it up in the kitchen downstairs. It's a pretty red and yaller thing, but of no value, miss, so I don't s'pose you'll take it orf me."

Paying no attention to this whimpering, Diana twitched the ribbon out of the old woman's hands and examined it. It was a broad yellow ribbon of rich silk, spotted with red—very noticeably and evidently of foreign manufacture.

"It is the same!" cried Diana, greatly excited. "Mr. Denzil, I bought this ribbon myself in Florence!"

"Well," said Lucian, wondering at her excitement, "and what does that prove?"

"This: that a stiletto which my father bought in Florence, at the same time, has been used to kill him! I tied this ribbon myself round the handle of the stiletto!"