"That question occurred to me long ago. It is no new discovery that women are the best mediums for discovering secrets. Bright eyes and diamonds can cast light into many a dark corner--that is an old story! That 'the green book' is in the custody of some woman is unquestionable; but, so far, with all our espionage, we have reached no further. We were informed that Orloff's mistress was the possessor of 'the green book,' and paid down enormous sums for the information. And what did we find? A pack of scandalous anecdotes of St. Petersburg society, all of which, moreover, were known to us before. Then we got on another scent. 'The green book' was in the keeping of the 'Martinists,' whose president had a lady-love--faithfulness itself. In her case all our bribes were useless. So one night we had her surprised in her room, bound, the boards of the floor raised, and actually there was found a 'green book.' But it contained nothing but atheistic theses. What was the use of them? People may rebel against the Deity, but not against the Czar! At length we received secret information that the heart of the conspiracy is that league which calls itself 'The Northern Union'--its head Prince Ghedimin." "The devil!" "Yes, my friend; the next in succession to the throne! He it is who must hold possession of 'the green book,' or who has had it in his keeping. To whom should a man confide so dangerous a treasure but to his own wife? But the husband, we are told, always wore the key of the iron chest in which the book was guarded round his neck. Father Hilary attacked the Princess on the religious side, and persuaded her to remove the key from her husband's neck when he lay unconscious in typhus fever. She must have had many sins to atone for. Anyway, she did commit the small piece of treachery, and I passed a whole night studying 'the green book' obtained from Ghedimin." "Well?" "Well, having carefully gone through it, I flung it to the other end of the room. The book was filled with dangerous doctrines--nothing more. Pure abstract reasoning, philosophical treatises, and the like, but no single name of any member. What care I for the utterances of Seneca, Rousseau, Saint-Just? What I want to know is what the Muravieffs and Turgenieffs are talking about. That, too, was a mere piece of trickery. That cunning Ghedimin did not trust his wife. He gave her a book to keep which the Censor--had she betrayed him--would readily have condemned to be burned, but for which the President of Secret Police would have grudged the oil consumed in the reading." "Then, if the real 'green book' is not to be found in his wife's keeping, it must be in that of his lady-love--and that lady-love is Zeneida?" "Right." "Is she a foreigner?"