Near by was a dark hallway, partly open. Both of the boys stepped into it, and an instant later the stranger went by.
When he was gone Frank uttered an exclamation.
"I saw that fellow talking to Mr. Mann in the post-office only a few days ago! I think he is a private detective."
Richard gave a start.
"Then I see it all," he groaned. "That man knows of Norris's doings, and as he has seen me in his company he thinks I'm in with that crowd, and has probably told Mr. Mann so."
"Very likely that's the case," admitted Frank, after a moment's thought.
"It's an awful fix to be in," continued Richard. "I don't know how I can ever clear my name. Even if I tell what I know about Norris I have no proofs to show that I didn't go to that place willingly."
"That's true. You're in a bad light at the best. It's a shame! I'll tell you what you do."
"What?"
"There is no reason why you should suffer on Norris's account. He is no friend of yours, and has been trying to lead you astray. Who knows but what, if he is left alone, he may not try some day to get you in even deeper? I'd go to Mr. Williams and tell him the whole truth."