Frank was not gagged.

“It must take a great rascal to match you,” he said.

“I confess that I did not know you in the theater,” said Brattle; “but I knew you after you had followed us so far.”

Frank was disgusted.

“So you discovered I was following you?” he muttered.

“Yes. Then I was certain it must be you; but how you found your way into that yard is what beats me. You disappeared from the street in a twinkling, and next you were in that yard when we came to hunt for you.”

“And you don’t know how I got there?”

“I don’t know how you found the way.”

Frank wondered if the man spoke the truth. He wondered if, indeed, the Mystery had not betrayed him after all. If not, what had become of Mr. Noname? Frank remembered how many times that strange man had appeared and saved him from his enemies, and he began to wonder if it would not happen again.

“Tell me how you found your way into that yard,” commanded Martin Brattle.