"Ah!" said the other mildly, "that is most unfortunate!"

"May I, on my side, put to you a question to which I should be glad of an honest answer?" said Vanderlyn abruptly. "Are you now engaged in making a wide-spread enquiry among those who had the honour of this lady's acquaintance?"

"No, Monsieur,"—the Prefect's manner showed an eager desire to be quite frank,—"I am confining my personal enquiries to only two persons; that is, to a certain Madame de Léra, to whom you will remember Mrs. Pargeter was about to pay a visit at the moment she disappeared, and to yourself."

Vanderlyn made a sudden nervous movement, but he checked the words which rose to his lips, for the Prefect was again speaking, and this time with a certain excitement of manner.

"I am convinced that Mrs. Pargeter never intended to go to Madame de Léra, and that the proposed visit was a blind! The facts speak for themselves. Madame de Léra had taken only one servant to the country, and this servant, an old woman whom she has had with her many years, and whom she can entirely trust, had no idea that her mistress was expecting a visitor! I repeat—that no preparations for Mrs. Pargeter's arrival had been made at Marly-le-Roi. It is my belief—nay, my conviction—that Madame de Léra knows perfectly well where her friend is now concealed."

It was then that Vanderlyn committed what was perhaps the only mistake he was destined to commit during this difficult interview. "Has Madame de Léra made any such admission?" he asked quickly.

"No," answered the Prefect, looking at him thoughtfully, "Madame de Léra has made no admission; but then I have learned, through long experience, never to believe, where there is a friend in the case, what a lady tells me. Women of the world, my dear sir, are more loyal the one to the other than we men may choose to believe!"

"And men, Monsieur? Are they more disloyal?" Vanderlyn spoke quietly, indifferently, as if the question was of no moment.

"Men," said Monsieur le Préfet, dryly, "are as a rule quite as loyal, especially where they feel their honour is engaged. But with a man it is possible to reason; a woman, especially a good woman, follows the dictates of instinct,—in other words, of her heart."

"I notice, Monsieur le Préfet, that you eliminate the possibility of material accident having occurred to Mrs. Pargeter?"