“Do you know of any other Church of San Frediano?” I inquired.

“Only the one in Lucca.”

It was evident, then, that the meeting was to take place there on the 6th of March. If I did not ascertain any further facts concerning Paolo Melandrini in the meantime, I resolved to keep the appointment and watch who should be present.

I gave Carlini permission to smoke, and, seated in a low easy-chair, the old fellow soon filled my room with the strong fumes of his cheap cigar, at the same time relating to me in narrow details all that he had gathered in that Florentine slum.

The secret connexion between Burton Blair and this mysterious Italian was a problem I could not solve. There was evidently some strong motive why he should appoint him controller of Mabel’s fortune, yet it was all an utter enigma, just as much as the mysterious source from which the millionaire had obtained his vast wealth.

Whatever we discovered I knew that it must be some strange revelation. From the first moment I had met the wayfarer and his daughter, they had been surrounded by striking romance, which had now deepened, and become more inexplicable by the death of that bluff, hearty man with a secret.

I could not help strongly suspecting that the man Melandrini, whose movements were so mysterious and suspicious, had had some hand in filching from Blair that curious little possession of his which he had, in his will, bequeathed to my keeping. This was a strange fancy of mine, and one which, try how I would, I could not put aside. So erratic seemed the man’s movements that, for aught I knew, he might have been in England at the time of Blair’s death—if so, then the suspicion against him was gravely increased.

I was feverishly anxious to return to London, but unable yet to do so ere my inquiries were completed. A whole week went by, and Carlini, employing his son-in-law, a dark-haired young man of low class, as his assistant, kept vigilant watch upon the house both night and day, but to no avail. Paolo Melandrini did not appear to claim the letter from England that was awaiting him.

One evening by judiciously bribing the old servant with twenty francs, Carlini obtained the letter in question, and brought it for me to see. In the privacy of my room we boiled a kettle, steamed the flap of the envelope, and took out the sheet of notepaper it contained.

It was from Blair. Dated from Grosvenor Square eighteen days before, it was in English, and read as follows:—