“Come,” said she, with a winning smile, “tell me who it is that says I know so much.”

“Pooh! pooh!” returned Hortebise. “What good would that do? He has made a fool of me, and caused me to risk losing your good opinion. Is not that enough? To-morrow, when he comes to my house, my servants will refuse to admit him; but if I were to do as my inclinations lead me, I should hand him over to the police.”

“That would never do,” returned the Countess, “for that would change a mere nothing into a matter of importance. Tell me the name of your mysterious informer. Do I know him?”

“It is impossible that you could do so, madame, for he is far below you in the social grade. You would learn nothing from his name. He is a man I once helped, and is called Daddy Tantaine.”

“A mere nickname, of course.”

“He is miserably poor, a cynic, philosopher, but as sharp as a needle; and this last fact causes me great uneasiness, for at first I thought that he had been sent to me by some one far above him in position, but—”

“But, doctor,” interposed the Countess, “you spoke to me of proofs, of threats, of certain mysterious persons.”

“I simply repeated Daddy Tantaine’s words. The old idiot said to me, ‘Madame de Mussidan knows all about the fate of the Marquis, and this is clearly proved by letters that she has received from him, as well as from the Duke de Champdoce.’”

This time the arrow went home. She grew deadly pale, and started to her feet with her eyes dilated with horror.

“My letters!” exclaimed she hoarsely.