the way. One of our men has ascertained that the United States Minister here is acquainted with you – that your family is known to him. Your aunt, you will remember, was quite prominent in society, in New York, at the time she married Monsieur the Count d'Este. Whether the Minister is acquainted with you personally, we have not been able to learn, but that he knows who you are, is certain."
"Then I had best call upon him, and arrange for letters to Dr. Hartmann."
"That is the best course. His house is near by. Take a cab at once, go to him, and state your errand. You will have no difficulty, I feel sure." She noiselessly opened the door, and in a moment was gone, leaving Grace in a state of wonder. She did not waste much time, however, in speculating upon the curious affair in which she found herself involved, but putting on her hat, started off at once in search of the American Minister.
CHAPTER III
When Richard Duvall and his companion entered the house of the French Ambassador in London, it was evident that their arrival was expected. The detective had no more than given his name to the butler who threw open the door, when the latter, with a bow of recognition, conducted them to a small reception-room to the right of the entrance, and informed them that Monsieur de Grissac would see them at once.
They did not have long to wait. The Ambassador, a thin, spare, nervous-looking man of sixty, with white hair and a gray-white mustache, came hurriedly into the room after but a few moments had elapsed, and greeting them excitedly, bade them be seated. He himself remained standing, his back to the fireplace, twirling his eyeglasses at the end of their black silk ribbon, and observing his visitors keenly.
"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?"
"I think so – indeed, I very greatly hope so."
"Why?"
The Ambassador recovered himself with a start. Evidently he had said more than he intended. It was some time before he answered the question and then he did so lamely. "Its theft by someone interested in its value as a curiosity would enable me to recover it most readily – by the payment, of course, of a sum of money."
"True. But I assume, from what you say, that there might be other reasons; that it might have been taken by those who suspected that it had another value?"
For a moment Monsieur de Grissac appeared confused. Then he waved his hand impatiently. "There are those," he said, "who seek to injure me. They know that I prized this thing highly. Their motive may have been – not money, but revenge. In that case, its recovery will be vastly more difficult."
Duvall saw that Monsieur de Grissac was not being frank with him, and for a moment he was conscious of a deep sense of annoyance. Monsieur Lefevre had, heretofore, invariably taken him into his confidence. He controlled his feelings, however, and appeared to be satisfied with the Ambassador's explanations. "What did the box contain, Monsieur de Grissac," he asked, pleasantly.
"A quantity of snuff, monsieur."
"Nothing else?"
"Nothing."
"Oh! And you, monsieur, are in the habit of using snuff?"
"Yes. It is the only form in which I use tobacco. Old-fashioned, perhaps, but I belong to the older generation." He straightened himself up suddenly. "Let us proceed, gentlemen. I fear we are wasting valuable time."
Duvall nodded. "Permit me to ask you a few more questions."
"I am at your service, monsieur."
"When did you last see the box?"
"This morning, at nine o'clock. I always carry it in the right-hand pocket of my waistcoat. To insure its safety, I had it attached to a long gold chain, which was securely fastened to the inside of the pocket. I rose this morning somewhat late, having attended a banquet last night. After having my coffee and rolls in my bedroom, I went to my dressing-room to be shaved. As I did so, I paused for a moment, drew the snuff box from the pocket of my white evening waistcoat, which my valet had hung in a closet the night before, and took a pinch of snuff from it. I then replaced it in the pocket and entered the dressing-room adjoining, where Noël, my man, was waiting for me. He proceeded to shave me as usual, and I began to dress. Upon going to the closet in my bedroom to remove the box, and fasten it by means of the chain to the clasp in the pocket of the waistcoat I had just put on, I was amazed to find it gone. I at once summoned Noël – "
"Summoned him?" interrupted the detective. "Was he not with you in the room?"
"No. A few moments before – as soon, in fact, as I had completed dressing, he left the apartment to give some instructions to my chauffeur."
"What did you do then?"
"I at once rushed out into the hall, calling for Noël."
"You believed, then, that he had taken the box?"
"I could believe nothing else. No one but he had been in my rooms."
"Oh! I see. And you questioned him?"
"Yes. On reaching the hall I met one of the maids ascending the stairway. I called to her, asking if she had seen Noël. She had not. She had been in the servants' hall – talking with the chauffeur – Noël had not been there."
"What did you do then?"
"I rushed to his room, which is on the floor above, thinking that, if he had taken the box, and proposed to deny the fact, he would have gone there to secrete it."
"Would he not have been more likely to leave the house immediately since he knew you would discover your loss at once?"
"No. He would realize that to flee would be to admit
