This I have not done entirely to my satisfaction, and so we will not go into the theory of the case, but will see what facts we have established; and fact number one, to my mind, is this: Your brother, Mr. Brierly, was most certainly shot down with malice aforethought. He could not have shot himself, and no one, in that open place, could have killed him by accident. He may have been entirely unaware of it, but he had an enemy; and the deed of yesterday was planned, I believe, long ago, and studied carefully in every detail."
Robert Brierly flushed and paled. He opened his lips as if to speak, but the detective's eyes were steadfastly turned away, and he resumed almost at once.
"I blame myself that I did not establish myself here last night, as I at first thought of doing. But it is too late for useless regret. And now, about this boy. Have you, either of you, a thought, a suspicion, as to his identity?"
The doctor shook his head.
"You can't suspect one of the pupils, surely?" hazarded Brierly.
"Be sure that Mrs. Fry knows every pupil in Glenville, by sight, at least; and this lad was a stranger, remember. It was a clever lad who first secured the key to these rooms and then decoyed Mrs. Fry half
