“Come, now—I told you that you must not be angry with me, madam,” he said, at length. “It is my nature to laugh heartily at times—and surely you won’t check such an innocent propensity. But I will take my leave of you now; and at half-past ten to-night we must meet at some place as near Stamford Street as you choose.”

“Where shall it be?” asked the old woman. “Name the spot—and I shall be punctual to the moment.”

“There is a narrow lane running along the side of Christ Church burial-ground,” responded the burglar, after a few moments’ reflection: “it leads from the Blackfriars Road into Collingwood Street——I suppose you know London well——”

“Oh! perfectly. Go on,” said Mrs. Mortimer.

“Well—we will meet in that crooked lane at half-past ten exactly,” continued Jack Rily. “By the by,” he added, rising from his chair, “you had better tell the landlady down stairs that you found out I could do nothing for you, and that you have resigned yourself to put up with your loss. It will prevent her from suspecting anything queer on account of your going out so late and remaining away an hour or so.”

“Leave that to me,” replied Mrs. Mortimer: “I shall know how to make all the excuses that are necessary. Indeed, if we are successful, I shall not return again to this place,” she observed, sinking her voice to a low whisper.

“Well—that is your business. And now good-bye for the present: at half-past ten we meet in the place appointed.”

Mrs. Mortimer spoke a few words of assent; and the Doctor took his departure, bestowing upon the woman a familiar nod, accompanied by a grin and a leer, before he crossed the threshold and closed the chamber-door behind him.

When Mrs. Mortimer was left alone, she began to ponder deeply upon the particulars of this interview which had just terminated.

The man knew the hiding-place where it was presumed that Vitriol Bob and Torrens had taken refuge; and it was doubtless some cellar or dangerous place, where a crime might be committed with impunity, as well as where the perpetrators of crime might conceal themselves. Then, what guarantee had she that Rily would not make her his victim, after availing himself of her services in subduing the plunderers and recovering the stolen treasure?