CHAPTER VI
AT THE SINGING SCHOOL
Frank did not hesitate a minute. He believed that it was his duty, if possible, to overtake the spy, and not only learn his identity, but in some fashion make him promise not to reveal what he had seen and heard.
He started as fast as he could, making allowances for the fact that he did not wish to alarm the fellow too soon. The shades of evening were not far away, since night comes early in mid-November, and try as he would, he found it impossible to decide as to whether the other was someone he knew or a stranger.
As he ran quickly over in his mind the list of those who would come under the head of suspicion, he put them aside, one after another. It was certainly not Lef Seller or Bill Klemm; another look, and he was just as positive that it could not be either Asa Barnes or Tony Gilpin.
Perhaps, after all, this cunning spy might be some
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