Chapter 4

“Just so. You’re getting there, are you? On the right track at last—one more mental effort and all is clear as day! It’s all quite logical. Your enemy doesn’t just steal—he substitutes. Nothing disappears, and except for the noise of the falling show-case everything would have been carried out in perfect secrecy and have gone undiscovered. Until some fresh development occurred, you would have been absolutely unaware that the real necklace had vanished and that you were displaying on your snowy shoulders a string of…