"On the northbound Chicago, Rock Island and Pacific express."
"You were on that train?"
"I was, and I saw Black Harry's face when he was unmasked by Robert Dawson—saw it distinctly. You are Black Harry!"
"You were never more deceived in all your life. My name is Frank Merriwell, as I can easily prove."
"Your real name may be Frank Merriwell, but you are the boy desperado who is known as Black Harry, and you are the chap who shot Mr. Robert Dawson."
The detective spoke with conviction, and it was plain that he really believed what he said. The boy began to look grave, as the situation was not exactly pleasant.
"You came from Elreno to Oklahoma City on the first train this morning, did you?" asked the youth.
"I did."
"How did it happen that you took this train back?"
"I spotted you. The moment I saw your face I knew you, and I shadowed you till the train started. I boarded the train with the determination to capture you. I seldom fail when I have resolved on a thing, and I did not fail this time."