He broke the seal and saw that the sheet of notepaper he took from the envelope was headed "Préfecture de Police." Hitherto the police had addressed all their communications to the Hôtel Saint Ange.

The letter ran as follows:

Dear Sir,
I am requested by the official who has the Dampier affair in hand to
ask you if you will come here this afternoon at three o'clock. As I
shall be present and can act as interpreter, it will not be necessary
for you to be accompanied as you were before.

Yours faithfully,
Ivan Baroff.

What an extraordinary thing! Up to the present time Mr. Stephens had not communicated with a single police official able to speak colloquial English; it was that fact which had made him find Gerald Burton so invaluable an auxiliary. But this letter might have been written by an Englishman, though the signature showed it to be from a foreigner, and from a Pole, or possibly a Russian.

Were the police at last on the trail of the missing man? Mr. Stephens' well-regulated heart began to beat quicker at the thought. But if so, how strange that the Prefect of Police had not communicated with the Hôtel Saint Ange last night! Monsieur Beaucourt had promised that the smallest scrap of news should be at once transmitted to John Dampier's wife.

Well, there was evidently nothing for it but to wait with what patience he could muster till the afternoon; and it was characteristic of Nancy's legal friend that he said nothing of his mysterious appointment to either the Burtons or to Mrs. Dampier. It was useless to raise hopes which might so easily be disappointed.

Three o'clock found Mr. Stephens at the Prefecture of Police.

"Ivan Baroff" turned out to be a polished and agreeable person who at once frankly explained that he belonged to the International Police. Indeed while shaking hands with his visitor he observed pleasantly, "This is not the kind of work with which I have, as a rule, anything to do, but my colleagues have asked me to see you, Mr. Stephens, because I have lived in England, and am familiar with your difficult language. I wish to entertain you on a rather delicate matter. I am sure I may count on your discretion, and, may I add, your sympathy?"

The English lawyer looked straight at the suave-spoken detective. What the devil did the man mean? "Certainly," said he, "certainly you can count on my discretion, Monsieur Baroff, and—and my sympathy. I hope I am not unreasonable in hoping that at last the police have obtained some kind of due to Mr. Dampier's whereabouts."