I carried the picture in my hand to where the dim oil lamp was burning, and examined it very closely. It was a vignette of a long-faced, bald-headed, full-bearded man, wearing a stand-up collar, a black frock-coat and well-tied bow cravat. The stud in his shirt-front was somewhat peculiar, for it seemed like the miniature cross of some foreign order of chivalry, and produced a rather neat and novel effect. The eyes were those of a keen, crafty man, and the hollow cheeks gave the countenance a slightly haggard and striking appearance.

It was a face that, to my recollection, I had never seen before, yet such were its peculiarities that they at once became photographed indelibly upon my memory.

I told him of my failure to recognise who it was, whereupon he urged—

“When you return, watch the movements of your so-called friend Seton, and you will perhaps meet his friend. When you do, write to me here, and leave him to me.” And he replaced the photograph in the drawer, but as he did so my quick eye detected that within was a playing-card, the seven of clubs, with some letters written upon it very similar to those upon the card in my pocket. I mentioned it, but he merely smiled and quickly closed the drawer.

Yet surely the fact of the cipher being in his possession was more than strange.

“Do you ever travel away from Lucca?” I inquired at last, recollecting how I had met him at Blair’s table in Grosvenor Square, but not at all satisfied regarding the discovery of the inscribed card.

“Seldom—very seldom,” he answered. “It is so difficult to obtain permission, and then it is only given to visit relatives. If there is any monastery in the vicinity of our destination we must beg our bed there, in preference to remaining in a private house. The rules sound irksome to you,” he added with a smile. “But I assure you they do not gall us in the least. They are beneficial to man’s happiness and comfort, all of them.”

Again I turned the conversation, endeavouring to ascertain some facts concerning the dead man’s mysterious secret, which I somehow felt convinced was known to him. But all to no avail. He would tell me nothing.

All he explained was that the reason of the appointment in Lucca that evening was a very strong one, and that if alive the millionaire would undoubtedly have kept it.

“He was in the habit of meeting me at certain intervals either in the Church of San Frediano, or at other places in Lucca, in Pescia, or Pistoja,” the monk said. “We generally varied the place of meeting from time to time.”