“Why didn’t you rouse the men? It must be thieves.”

“I did go to the men’s room; but their door was locked, and I could not make them hear. I did not dare to knock loud; but I saw a light in the room, under the door; and if they’d been awake they would have heard.”

“Perhaps they weren’t there,” I suggested.

Suzanne turned a sudden look on me. Then she said:

“The safe holding the jewels is fixed in the wall of the duchess’ dressing room. And—and Lafleur knows it.”

The duke had heard the story with a frowning face; but now a smile appeared on his lips, and he said:

“Ah, yes! The jewels are there!”

“The—the Cardinal’s Necklace,” whispered Suzanne.

“True,” said the duke; and his eyes met mine, and we both smiled. A few minutes ago it had not seemed likely that I should share a joke—even a rather grim joke—with him.

“Mr. Aycon,” said he, “are you inclined to help me to look into this matter? It may be only the girl’s fancy—”