The midnight stillness deepened about those two; there was not another living creature to be seen. The irregular old buildings on every side looked ruinous in the shadowy moonlight, and the whole market-place presented to the Boy a picture of desolation which chilled him. He was about to turn away with a last cursory glance at the other solitary figure, when something suddenly occurred which arrested his attention. It seemed to startle him too, for he sprang back, with prompt agility, into a dark doorway behind him, from whence he watched what followed with the keenest interest, being careful, however, to conceal himself the while. He had not felt any movement of pity or kindly compassion for the girl; perfect indifference had succeeded the first sensation of repugnance; he would have left her there to any fate that might await her, and would have expected all right-minded people to do the same. It was therefore with unmitigated astonishment that he beheld the scene which was now being enacted before him. They were no longer alone. A tall and graceful lady of most dignified bearing, with a countenance of peculiar serenity and sweetness, had approached from the opposite direction, and was standing beside the girl, speaking to her evidently, but the Boy was too far off to hear what was said. He could see, however, that the girl's whole attitude had changed. She was no longer dejected, but eager: and she gazed in the lady's face as she listened to her words with an expression of admiration and wonder, one had almost said of adoration, upon her own, as though it were a heavenly visitant who had hailed her. The lady, as she spoke, pointed to a street opposite, and the girl cast a quick glance in that direction; she seemed to be measuring a distance she was impatient to traverse, and moved a step forward at the same time, uttering some short sentence with rapid gesticulation. The pantomime was perfectly intelligible to the Boy, who understood that she was feverishly anxious to carry out some intention on the instant. The lady seemed to hesitate, then, laying her beautiful white ungloved hand on the girl's shoulder, and looking into her face, she spoke again earnestly. The girl answered with passionate protestations, and then the lady smiled, satisfied apparently, and led the way in the direction to which she had pointed, the girl following in haste. Her hat had fallen back, her hair was loosened, her countenance beamed with enthusiasm, as the Boy observed. He was stealing softly after them, skipping from shadow to shadow, in great enjoyment of the whole adventure.

The lady took the girl to a long low rambling house beside a church, at the door of which she knocked. It was opened immediately by a singularly venerable looking old man, evidently a priest, with a fine though rugged face, instinct with zeal and benevolence. He had his hat in his hand, and was just coming out; but when he saw who had knocked, he stopped short, and bowed deferentially. The girl sank down upon the doorstep as if exhausted.

"I have brought Marie Cruchot home, father," the lady said.

"Ah, my daughter, is that you? We have been expecting you for many days," the old man exclaimed in French, taking the girl's hand and raising her gently as he spoke. "I have prayed for you day and night without ceasing, and only just now, as I passed the convent, I went to ask the night portress for tidings of our wandering sheep, and specially mentioned you. But enter. The good sisters are waiting for you, and will welcome you with joy."

One of two sisters of charity, who were standing behind the priest, now came forward and kissed the girl. The old man raised his hat, and, looking up into the clear depths of the quiet sky, murmured a blessing, and went his way. And then the door was closed.

"Humph!" said the Boy, who was lurking up an entry opposite. "So that is what they do at night, is it? and that is the young person who sold her sister Louise to Mosley Menteith. Now I am beginning to know the world; and what an extraordinary old world it is, to be sure! One half seems to be always kept busy mending the mischief the other half has made."

He peeped cautiously out of the entry, looking for the lady, but she had disappeared, and night and silence reigned supreme.

CHAPTER IV.

All that the Tenor had witnessed of the scene in the market-place made little or no impression on him, and he would probably never have thought of it again had he not encountered the Boy a few nights later, standing, idly observant as before, at the same time and almost in the same place.

The Tenor's first impulse was to pass on without speaking, but the Boy looked at him, and there was something in the look, half shy, half appealing, which caused him to stop, and having stopped, he was obliged to speak.