"You have not moved, I think," I reminded him; but he sat back, not looking at the board and not speaking until his daughter came. I understood this to signify that I was on my trial. "Miss Gilmore gave you a sealed envelope some days ago, Charlotte," he said to her. "She wishes you to bring it to me. Has it really any connexion with this case?" he asked, as soon as she had left to fetch it. I laughed. "How could it, your Excellency? What could a girl in my position, here only a few weeks, possibly know about such a thing?" As this was the thought obviously running in his own mind, he had no difficulty in assenting to it politely. "Then what does this mean?" he asked, with a little fretful frown of inquisitiveness. "I am only proving my self-diagnosis as a somewhat unusual person. Will you move now?" He bent forward and scanned the pieces; but his thoughts were not following his eyes, and with an impatient gesture he leaned back again. I continued to study the board as though the game were all in all to me. "You are pleased to be mysterious, Miss Gilmore;" he said, his tone a mingling of severity, sarcasm and irritation. I was to understand that a man of his exalted importance was not to be trifled with. "I appreciate greatly your valuable services, but I do not like mysteries." I raised my eyes from the board as if reluctantly. "I am unlike your Excellency in that. They have a distinct attraction for me. This has." I indicated the mate problem with my hand, but my eyes contradicted the gesture. He believed the eyes, and again moved uneasily in his chair. "It is naturally an attractive problem. I have moved, you know." He was a very legible man for all his diplomatic experience; and the little struggle between his sense of dignity and piqued curiosity was quite amusing. But I was careful not to show my amusement. Nothing more was said until the envelope had been brought and Charlotte sent away again. He toyed with it, trying to appear as if it were part of some silly childish game to which he had been induced to condescend in order to please me. "What shall I do with this?" "Suppose you open it?" I said,