I stood there, unprepared for any offensive or defensive movement. Yet my enemy, I knew, was not idle. As I stood peering unavailingly through the gloom I could hear the quick thud of the safe door being shut. Then came the distinct sound of a heavy key being thrust and turned in a metal lock—the safe, obviously, was of the old-fashioned key-tumbler make—and then the noise of this key being withdrawn. Then came a click or two of shoe heels, a rustle of clothing, and a moment later the startlingly sharp shattering of a window-pane.

The woman had deliberately locked the safe and flung the key through the window! She had stolen a march on me. She had defeated me in the first movement of our encounter. My hesitation had been a mistake, a costly mistake.

"Be so good as to turn on that light!" I commanded.

Not a sound came from the darkness.

"Turn on that light," I cried. "Turn on that light or I'll fire! I'll rake every foot of this room!" And with that I gave a very significant double click to my cigarette case spring.

The light came on again, as suddenly as it went out. I discreetly pocketed my cigarette case.

The woman was standing beside the safe, as before, studying me with her wide and challenging eyes. But all this time not a word had come from her lips.

"Sit down!" I commanded, as authoritatively and yet as offhandedly as I could. It was then that she spoke for the first time.

"Thank you, I prefer to stand!" was her answer. She spoke calmly and distinctly and almost without accent. Yet I felt the voice was, in some way, a foreign one. Some vague substratum of the exotic in the carefully enunciated tones made me surmise that she was either an Austrian or a Gallicized Hungarian, or if not that, possibly a Polish woman.

"You will be here for some time," I hinted.