e saw two men following his talented counterfeit, and he
followed them, and at the proper moment rejoined Cad. The second change
was made and Oscar proceeded to the restaurant to meet the siren. He
found her at the appointed place, and together they entered the
dining-room and took seats at the same table where they had held their
original consultation. The woman appeared to be in excellent humor and
said:

"Oh, I feel so greatly encouraged."

"I will encourage you still further. I have considered the matter and I
have determined to rescue your brother, but I must have your full
confidence. What is your name?"

"Libbie Van Zant."

"Very well, Miss Van Zant, when am I to meet your brother?"

"You are not to meet him right away."

"Why not?"

"I do not wish him to suspect that I have betrayed him. I must have time
to prepare him for the meeting with you."

"That is all right."

"And now let me tell you something: these are very desperate men; you
must secure aid."

"Oh, certainly."

"I want you to select the men who will aid you. We must not make a
mistake. You must have men with you when you make the raid on the
place."

"I certainly will."

"Will you introduce them to me?"

"Why should I introduce them to you?"

"I wish to know them, so I can arrange for my brother's safety."

"Oh, I see; well, in good time you shall meet them."

"We must go slow and sure in this matter."

"Oh, certainly, and you are becoming quite a detective."

"I am working for my brother's safety--his salvation. I am willing to
brave almost everything to save him."

"We will save him."

"By to-morrow I will arrange for my brother to have a meeting with some
of those men with whom he is associated, and I will arrange that you
shall be hidden in a place from where you can overhear everything that
is said. You will secure considerable information. You will know how to
use it. Yes, we will move slowly, but surely. There must be no mistake
made, no failure, or it will cost my brother's life, and I also may
become their victim."

"Very well, you can depend upon me."

"I have your confidence?"

"Yes."

"Can we not arrange signals between us?"

"Certainly."

"I am going to start in as a regular detective in this affair, and at
any moment I may want to signal to you; yes, warn you in case anything
appears to be going wrong at a critical moment."

"I am delighted to work with one as shrewd and thoughtful as you are,"
s