“Well, this time,” said the cardinal, “it is not necessary to steal his confidence, but to present yourself frankly and loyally as a negotiator.”

“Frankly and loyally,” repeated Milady, with an unspeakable expression of duplicity.

“Yes, frankly and loyally,” replied the cardinal, in the same tone.  “All this negotiation must be carried on openly.”

“I will follow your Eminence’s instructions to the letter.  I only wait till you give them.”

“You will go to Buckingham in my behalf, and you will tell him I am acquainted with all the preparations he has made; but that they give me no uneasiness, since at the first step he takes I will ruin the queen.”

“Will he believe that your Eminence is in a position to accomplish the threat thus made?”

“Yes; for I have the proofs.”

“I must be able to present these proofs for his appreciation.”

“Without doubt.  And you will tell him I will publish the report of Bois-Robert and the Marquis de Beautru, upon the interview which the duke had at the residence of Madame the Constable with the queen on the evening Madame the Constable gave a masquerade.  You will tell him, in order that he may not doubt, that he came there in the costume of the Great Mogul, which the Chevalier de Guise was to have worn, and that he purchased this exchange for the sum of three thousand pistoles.”

“Well, monseigneur?”

“All the details of his coming into and going out of the palace—­on the night when he introduced himself in the character of an Italian fortune teller—­you will tell him, that he may not doubt the correctness of my information; that he had under his cloak a large white robe dotted with black tears, death’s heads, and crossbones—­for in case of a surprise, he was to pass for the phantom of the White Lady who, as all the world knows, appears at the Louvre every time any great event is impending.”

“Is that all, monseigneur?”

“Tell him also that I am acquainted with all the details of the adventure at Amiens; that I will have a little romance made of it, wittily turned, with a plan of the garden and portraits of the principal actors in that nocturnal romance.”

“I will tell him that.”

“Tell him further that I hold Montague in my power; that Montague is in the Bastille; that no letters were found upon him, it is true, but that torture may make him tell much of what he knows, and even what he does not know.”

“Exactly.”

“Then add that his Grace has, in the precipitation with which he quit the Isle of Re, forgotten and left behind him in his lodging a certain letter from Madame de Chevreuse which singularly compromises the queen, inasmuch as it proves not only that her Majesty can love the enemies of the king but that she can conspire with the enemies of France.  You recollect perfectly all I have told you, do you not?”

“Your Eminence will judge:  the ball of Madame the Constable; the night at the Louvre; the evening at Amiens; the arrest of Montague; the letter of Madame de Chevreuse.”