"Of course I know all that. How much longer are we to talk? Must I disguise myself? When am I to be ready? And where are we going?"

"Now you are growing impatient. That is not a good sign. Remember, I can easily procure another witness; but for your own sake I wish to give you the chance. Probably you will see to-night the man who killed your father."

As he spoke my flesh was creeping, and my blood ran cold, then suddenly flushed through my system like electric fluid. He began again as coolly as if he were reporting a case of some one discovered "drunk and incapable." From force of habit, he touched his forehead, and stood at attention, as he spoke. "In consequence of information which I have received, I have been induced to make certain inquiries, which have resulted in the conviction that the criminal I am in search of will be present at a certain place this night, at a certain hour. It is therefore my intention to embrace the opportunity of--"

"Catching him!" cried I in a breathless hurry.

"To embrace the opportunity," continued the Inspector, like a talking oak, "of conducting my investigations personally, and in the presence of a witness. The effect thereby produced upon my mind shall be entered duly, the moral effect I should have said, and the cause of justice will be promoted as rapidly as is consistent with the principles of our glorious constitution."

"Do you mean to say that you will let him go?"

"No, I shall not let him go, Miss Valence, for the simple reason that I shall not apprehend him. I see that you are inclined to take the law into your own hands. That will never do for me."

"Oh no, I am not. A year ago I would have done so. But I am older and wiser now."

I was thinking of dear mother; and began to feel already that my character was changing.

CHAPTER XVIII.