Millicent pouted, but Mrs. Cunningham said: "I think, perhaps, that you are right, Mark, and it is better that we should know nothing about it; we shall know that you are looking for a clew, but of course no danger can arise until you obtain it and attempt to arrest him. I feel sure that you will do nothing rash, especially as if any harm befell you he might escape unpunished, and therefore that when the time comes to seize him you will obtain such help as may be necessary, and will, if possible, arrest him at a moment when resistance is impossible."

"Thank you, Mrs. Cunningham; I shall certainly spare no efforts in taking him that way, and would far rather he met his fate on a gibbet than by a bullet from my pistol."

"I agree with you, Mark," Millicent said; "even hanging is too good for such a wicked man. When are you going to set about it?"

"I hope to be able to begin tomorrow," he said. "I am impatient to be at work, even though I know perfectly well that it may be months before I can get on his track. I hope to get a good deal of information as to the habits of men of his kind from the Bow Street runners, and I have an appointment tomorrow morning to see their chief, who will give me every assistance in his power."