the process of elimination, we've excluded all methods of egress except the chimney."
He paused, frowning, in some perplexity; and then he said uneasily: "What I don't like about it is that Victoire was set in the fireplace. I asked myself at once what was she doing there. It was unnecessary that she should be drugged and set in the fireplace—quite unnecessary."
"It might have been to put off an examining magistrate," said the Duke. "Having found Victoire in the fireplace, M. Formery did not look for anything else."
"Yes, it might have been that," said Guerchard slowly. "On the other hand, she might have been put there to make sure that I did not miss the road the burglars took. That's the worst of having to do with Lupin. He knows me to the bottom of my mind. He has something up his sleeve—some surprise for me. Even now, I'm nowhere near the bottom of the mystery. But come along, we'll take the road the burglars took. The inspector has put my lantern ready for me."
As he spoke he went to the fireplace, picked up a lantern which had been set on the top of the iron fire-basket, and lighted it. The Duke stepped into the great fireplace beside him. It was four feet deep, and between eight and nine
