As foreign steamers would leave London at about the time of high-water, our plan would be to get down the river by a previous ebb-tide, and lie by in some quiet spot until we could pull off to one. The time when one would be due where we lay, wherever that might be, could be calculated pretty nearly, if we made inquiries beforehand.

Herbert assented to all this, and we went out immediately after breakfast to pursue our investigations. We found that a steamer for Hamburg was likely to suit our purpose best, and we directed our thoughts chiefly to that vessel. But we noted down what other foreign steamers would leave London with the same tide, and we satisfied ourselves that we knew the build and colour of each. We then separated for a few hours; I, to get at once such passports as were necessary; Herbert, to see Startop at his lodgings. We both did what we had to do without any hindrance, and when we met again at one o'clock reported it done. I, for my part, was prepared with passports; Herbert had seen Startop, and he was more than ready to join.

Those two should pull a pair of oars, we settled, and I would steer; our charge would be sitter, and keep quiet; as speed was not our object, we should make way enough. We arranged that Herbert should not come home to dinner before going to Mill Pond Bank that evening; that he should not go there at all, to-morrow evening, Tuesday; that he should prepare Provis to come down to some Stairs hard by the house, on Wednesday, when he saw us approach, and not sooner; that all the arrangements with him should be concluded that Monday night; and that he should be communicated with no more in any way, until we took him on board.

These precautions well understood by both of us, I went home.

On opening the outer door of our chambers with my key, I found a letter in the box, directed to me; a very dirty letter, though not ill-written. It had been delivered by hand (of course since I left home), and its contents were these:

"If you are not afraid to come to the old marshes to-night or tomorrow night at Nine, and to come to the little sluice-house by the limekiln, you had better come. If you want information regarding your uncle Provis, you had much better come and tell no one and lose no time. You must come alone. Bring this with you."

I had had load enough upon my mind before the receipt of this strange letter. What to do now, I could not tell. And the worst was, that I must decide quickly, or I should miss the afternoon coach, which would take me down in time for to-night. To-morrow night I could not think of going, for it would be too close upon the time of the flight. And again, for anything I knew, the proffered information might have some important bearing on the flight itself.

If I had had ample time for consideration, I believe I should still have gone. Having hardly any time for consideration - my watch showing me that the coach started within half an hour - I resolved to go. I should certainly not have gone, but for the reference to my Uncle Provis; that, coming on Wemmick's letter and the morning's busy preparation, turned the scale.

It is so difficult to become clearly possessed of the contents of almost any letter, in a violent hurry, that I had to read this mysterious epistle again, twice, before its injunction to me to be secret got mechanically into my mind.