“Naturally. Permit me to return to my notes. Monsieur informs me that twenty-one years ago, in 1848, the Parisian police were instructed to find out this lady and failed, but gave hopes of discovering her through her relations. He asks me to refer to our archives; I tell him that is no use. However, in order to oblige him, I do so. No trace of such inquiry: it must have been, as Monsieur led me to suppose, a strictly private one, unconnected with crime or with politics; and as I have the honour to tell Monsieur, no record of such investigations is preserved in our office. Great scandal would there be, and injury to the peace of families, if we preserved the results of private inquiries intrusted to us—by absurdly jealous husbands, for instance. Honour,—Monsieur, honour forbids it. Next I suggest to Monsieur that his simplest plan would be an advertisement in the French journals, stating, if I understand him right, that it is for the pecuniary interest of Madame or Mademoiselle Duval, daughter of Auguste Duval, artiste en dessin, to come forward. Monsieur objects to that.”

“I object to it extremely; as I have told you, this is a strictly confidential inquiry; and an advertisement which in all likelihood would be practically useless (it proved to be so in a former inquiry) would not be resorted to unless all else failed, and even then with reluctance.”

“Quite so. Accordingly, Monsieur delegates to me, who have been recommended to him as the best person he can employ in that department of our police which is not connected with crime or political surveillance, a task the most difficult. I have, through strictly private investigations, to discover the address and prove the identity of a lady bearing a name among the most common in France, and of whom nothing has been heard for fifteen years, and then at so migratory an endroit as Aix-la-Chapelle. You will not or cannot inform me if since that time the lady has changed her name by marriage.”

“I have no reason to think that she has; and there are reasons against the supposition that she married after 1849.”

“Permit me to observe that the more details of information Monsieur can give me, the easier my task of research will be.”

“I have given you all the details I can, and, aware of the difficulty of tracing a person with a name so much the reverse of singular, I adopted your advice in our first interview, of asking some Parisian friend of mine, with a large acquaintance in the miscellaneous societies of your capital, to inform me of any ladies of that name whom he might chance to encounter; and he, like you, has lighted upon one or two, who alas! resemble the right one in name and nothing more.”

“You will do wisely to keep him on the watch as well as myself. If it were but a murderess or a political incendiary, then you might trust exclusively to the enlightenment of our corps, but this seems an affair of sentiment, Monsieur. Sentiment is not in our way. Seek the trace of that in the haunts of pleasure.”

M. Renard, having thus poetically delivered himself of that philosophical dogma, rose to depart.

Graham slipped into his hand a bank-note of sufficient value to justify the profound bow he received in return.

When M. Renard had gone, Graham heaved another impatient sigh, and said to himself, “No, it is not possible,—at least not yet.”