"Here is one of Jack's."
"That will do first-rate."
Hal put on the hat and drew it down over his brow.
"Going to turn spy, be you?" remarked Andy McCabe.
"Yes."
"Well, I wish you luck."
Hal was soon out of the house. Once in the street, he looked up and down.
Ferris was not in view, but he soon caught sight of the fellow coming out of a tenement across the way. He crossed over and followed Ferris toward Park Row, and then to the boarding house.
Here Hal heard the youth say something to his aunt about changing his clothing, and the boy slipped into the house unobserved by anyone, and did likewise. Ferris then left again, followed by Hal.
"I suppose he thinks he has laid good ground-work for his alibi," thought Hal. "Well, let him think so, he will be surprised before long to learn the truth."