“Well, Louise, the scheme is deeper than even you think.  We are playing one country against another, America against—­you know the government our friend Schmidt works for in Paris.  Now, listen.  Those plans of the coaling station are a fake—­a fake.  It is just a commercial venture.  No nation would be foolish enough to attempt such a thing, yet.  We know that they are a fake.  But we are going to sell them through that friend of ours in the United States War Department.  But that is only part of the coup, the part that will give us the money to turn the much larger coups we have in the future.  You can understand why it has all to be done so secretly and how vexatious it is that as soon as one obstacle is overcome a dozen new ones appear.  Louise, here is the big secret.  By using those fake plans as a bait we are going to obtain something which when we all return to Paris we can convert into thousands of francs.  There, I can say no more.  But I have told you so much to impress upon you the extreme need of caution.”

“And how much does Miss Lovelace know?”

“Very little—­I hope.  That is why I must go to Washington myself.  She must know nothing of this coup nor of the real de Nevers, or the whole scheme may fall through.  It would have fallen through before, Louise, if you had failed us and had let any of de Nevers’s letters slip through to Miss Lovelace.  She richly deserved her fate for that act of treachery.  The affair would have been so simple, otherwise.  Luck was with us until her insane jealousy led her to visit Miss Lovelace.  It was fortunate the young lady was out when Madame called on her or all would have been lost.  Ah, we owe you a great deal, Louise, and we shall not forget it, never.  You will be very careful while I am gone?”

“Absolutely.  When will you return to me, Henri?”

“To-morrow morning at the latest.  This afternoon the false coaling station plans are to be turned over to our accomplice in the War Department and in exchange he is to give us something else—­the secret of which I spoke.  You see the trail leads up into high circles.  It is very much more important than you suppose and discovery might lead to a dangerous international complication just now.”

“Then you are to meet your friend in Washington to-night?  When do you start, Henri?  Don’t let the time slip by.  There must be no mistake this time as there was when we were working for Japan and almost had the blue prints of Corregidor at Manila only to lose them on the streets of Calcutta.”

“Trust me.  We are to meet about nine o’clock and therefore I leave on the limited at three-thirty, in about an hour.  From the station I am going straight to the house on Z Street—­let me see, the cipher says the number is 101—­and ask for a man named Gonzales.  I shall use the name Montez.  He is to appear, hand over the package--that thing I have told you about—­then I am to return here by one of the midnight trains.  At any cost we must allow nothing to happen which will reach the ears of Miss Lovelace.  I’ll see you early to-morrow morning, ma cherie, and remember, be ready, for the Aquitania sails at ten.  The division of the money is to be made in Paris.  Then we shall all go our separate ways.”