"How will we do it?"
"We will know just whom to shadow for each separate bit of information."
"By ginger! you are right."
"Now that you are up to this siren's movements I can trust you, Oscar."
"I might have gotten on to her plans. I was not about to surrender on demand, but it is better as it is. Time is saved, and to-night we will work our scheme. You shall be Oscar; I will be Cad, and at the proper moment we will resume and let the game go on."
"That is my idea."
That night at the proper hour an individual who looked very much like Oscar might have been seen hovering in the vicinity of the restaurant where the interview between the detective and the siren was to take place.
Our readers can grasp what was going on. Oscar, gotten up as a female, was on the "shadow," and very speedily all that Cad Metti had told him was confirmed. He 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?"