There we paused and listened. There was nothing to be heard. We climbed the first flight of stairs, and the duke turned sharp to the right. We were now in a short corridor which ran north and south; three yards ahead of us was another turn, leading to the west wing of the house. There was a window by us; the duke gently opened it; and over against us, across the base of the triangle formed by the building, was another window, four or five yards away. The window was heavily curtained; no light could be seen through it. But as we stood listening, the sounds began—first the gentle muffled hammering, then the sound of the file. The duke still held my arm, and we stood motionless. The sounds went on for a while. Then they ceased. There was a pause of complete stillness. Then a sharp, though not loud, click! And, upon this, the duke whispered to me:
“They’ve got the safe open. Now they’ll find the small portable safe which holds the necklace.”
And I could make out an amused smile on his pale face. Before I could speak, he turned and began to crawl away. I followed. We descended the stairs again to the hall. At the foot he turned sharply to the left, and came to a standstill in a recess under the staircase.
“We’ll wait here. Is your pistol all right?”
“Yes, all right,” said I.
And, as I spoke, the faintest sound spread from the top of the stairs, and a board creaked
