"Monsieur Lefevre had informed me of your coming, gentlemen," he presently burst out. "We have no time to lose."

"Let us have the details of the affair, monsieur," Duvall remarked, seating himself comfortably in his chair. "So far we are completely in the dark."

"You know, do you not, that a valuable article, a small snuff box, to be exact—has been stolen from me?"

"Yes. Of that I have been informed," the detective remarked, dryly. "I am curious to learn why the loss of an article of so trivial a nature should be regarded with such seriousness."

The Ambassador's eyes snapped—he seemed almost to resent the detective's attitude. "It should be sufficient, monsieur, I think, that it is so regarded. The task before us is to recover it—not discuss the reasons for doing so."

"I disagree with you, monsieur. If the real value of the stolen article is kept from me, how can I draw any conclusions as to the probable object of its theft? Was it intrinsically valuable? Did it contain anything of value? In short, why should any one have taken the trouble to steal it? Tell me that, and I can act intelligently. Otherwise, I shall be only groping about in the dark."

"I do not think so, monsieur." The Ambassador bent upon Duvall a searching glance. "The fact that the box is gone should be sufficient. All that I ask is that you recover it. You must trace its disappearance from the material facts of the case. Conjecture will avail us nothing."

"Is the box then of no value?"

"I have not said so. As a matter of fact, its value is great. It has been an heirloom in my family for many years. At one time it belonged to Cardinal Mazarin."

"You think, then, that its intrinsic value alone might have prompted the theft?"