As to whom and what these strangers might be, no direct information was vouchsafed by the Russian. Captain Ducie was left in a great measure to draw his own conclusions. A certain conversation which he had one day with his host seemed to throw some light on the matter. Ducie had been asking Platzoff whether he did not sometimes regret having secluded himself so entirely from the world; whether he did not long sometimes to be in the great centres of humanity, in London or Paris, where alone life's full flavour can be tasted.

"Whenever Bon Repos becomes Mal Repos," answered Platzoff—"whenever a longing such as you speak of comes over me—and it does come sometimes—then I flee away for a few weeks, to London oftener than anywhere else—certainly not to Paris: that to me is forbidden ground. By-and-by I come back to my nest among the hills, vowing there is no place like it in the world's wide round. But even when I am here, I am not so shut out from the world and its great interests as you seem to imagine. I see History enacting itself before my eyes, and I cannot sit by with averted face. I hear the grand chant of Liberty as the beautiful goddess comes nearer and nearer and smites down one Oppressor after another with her red right hand; and I cannot shut my ears. I have been an actor in the great drama of Revolution ever since a lad of twelve. I saw my father borne off in chains to Siberia, and heard my mother with her dying breath curse the tyrant who had sent him there. Since that day Conspiracy has been the very salt of my life. For it I have fought and bled; for it I have suffered hunger, thirst, imprisonment, and dangers unnumbered. Paris, Vienna, St. Petersburg, are all places that I can never hope to see again. For me to set foot in any one of the three would be to run the risk of almost certain detection, and in my case detection would mean hopeless incarceration for the poor remainder of my days. To the world at large I may seem nothing but a simple country gentleman, living a dull life in a spot remote from all stirring interests. But I may tell you, sir (in strictest confidence, mind), that although I stand a little aside from the noise and heat of the battle, I work for it with heart and brain as busily, and to better purpose, let us hope, than when I was a much younger man. I am still a conspirator, and a conspirator I shall remain till Death taps me on the shoulder and serves me with his last great writ of habeas corpus."

These words recurred to Ducie's memory a day or two later when he found at the dinner-table two foreigners whom he had never seen before.

"Is it possible that these bearded gentlemen are also conspirators?" asked the Captain of himself. "If so, their mode of life must be a very uncomfortable one. It never seems to include the use of a razor, and very sparingly that of comb and brush. I am glad that I have nothing to do with what Platzoff calls The Great Cause."

But Captain Ducie was not a man to trouble himself with the affairs of other people unless his own interests were in some way affected thereby. M. Paul Platzoff might have been mixed up with all the plots in Europe for anything the Captain cared: it was a mere question of taste, and he never interfered with another man's tastes when they did not clash with his own. Besides, in the present case, his attention was claimed by what to him was a matter of far more serious interest. From day to day he was anxiously waiting for news from the London bookseller who was making inquiries on his behalf as to the possibility of obtaining a copy of The Confessions of Parthenio the Mystic. Day passed after day till a fortnight had gone, and still there came no line from the bookseller.

Ducie's impatience could no longer be restrained: he wrote, asking for news. The third day brought a reply. The bookseller had at last heard of a copy. It was in the library of a monastery in the Low Countries. The coffers of the monastery needed replenishing; the abbot was willing to part with the book, but the price of it would be a sum equivalent to fifty guineas of English money. Such was the purport of the letter.

To Captain Ducie, just then, fifty guineas were a matter of serious moment. For a full hour he debated with himself whether or no he should order the book to be bought.

Supposing it duly purchased; supposing that it really proved to be the key by which the secret of the Russian's MS. could be mastered; might not the secret itself prove utterly worthless as far as he, Ducie, was concerned? Might it not be merely a secret bearing on one of those confounded political plots in which Platzoff was implicated—a matter of moment no doubt to the writer, but of no earthly utility to anyone not inoculated with such March-hare madness?

These were the questions that it behoved him to consider. At the end of an hour he decided that the game was worth the candle: he would risk his fifty guineas.

Taking one of Platzoff's horses, he rode without delay to the nearest telegraph station. His message to the bookseller was as under: