'You have played me an unworthy trick, sir,' I answered, thinking he would cozen me with fair speeches.

'Tut, tut!' he replied. 'You do not understand.'

'I understand well enough,' I answered, with bitterness, 'that, having done the King of Navarre's work, he would now be rid of me.'

'Have I not told you,' M. de Rosny replied, betraying for the first time some irritation, 'that he has greater need of your services than ever? Come, man, be reasonable, or, better still, listen to me.' And turning from me, he began to walk up and down the room, his hands behind him. 'The King of France--I want to make it as clear to you as possible--' he said, 'cannot make head against the League without help, and, willy-nilly, must look for it to the Huguenots whom he has so long persecuted. The King of Navarre, their acknowledged leader, has offered that help; and so, to spite my master, and prevent a combination so happy for France, has M. de Turenne, who would fain raise the faction he commands to eminence, and knows well how to make his profit out of the dissensions of his country. Are you clear so far, sir?'

I assented. I was becoming absorbed in spite of myself.

'Very well,' he resumed. 'This evening--never did anything fall out more happily than Rambouillet's meeting with me--he is a good man!--I have brought the king to this: that if proof of the selfish nature of Turenne's designs be laid before him he will hesitate no longer. That proof exists. A fortnight ago it was here; but it is not here now.'

'That is unlucky!' I exclaimed. I was so much interested in his story, as well as flattered by the confidence he was placing in me, that my ill-humour vanished. I went and stood with my shoulder against the mantelpiece, and he, passing to and fro between me and the light, continued his tale.

'A word about this proof,' he said. 'It came into the King of Navarre's hands before its full value was known to us, for that only accrued to it on M. de Guise's death. A month ago it--this piece of evidence I mean--was at Chizé. A fortnight or so ago it was here in Blois. It is now, M. de Marsac,' he continued, facing me suddenly as he came opposite me, 'in my house at Rosny.'

I started. 'You mean Mademoiselle de la Vire?' I cried.

'I mean Mademoiselle de la Vire!' he answered, 'who, some month or two ago, overheard M. de Turenne's plans, and contrived to communicate with the King of Navarre. Before the latter could arrange a private interview, however, M. de Turenne got wind of her dangerous knowledge, and swept her off to Chizé. The rest you know, M. de Marsac, if any man knows it.'