"Then what are the arrangements?" I asked.

"Just these. You are to leave here first. Make the best of your way to Mile End Gate, where an old inn stands in the middle of the road. Go to the corner of the turning opposite this, at the south side of the road. At eleven o'clock a four-wheeler will drive up, with Plummer and one of his men in it. The man is one who knows all the geography of Channel Marsh, and he also knows exactly where to find the boat I used to-day. You will drive to a little way beyond Bow Bridge, and then Plummer's man will lead you to the boat. You had better scull and leave the others to look out. They will know what to do. You will pull along to a place where you can watch till you see me coming on to the Marsh by the path. As soon as you see me you will slip quietly along to a place the policeman will show you, close to the ruin, and watch again. That's all. I don't know whether or not you think it worth while to take a pistol. I certainly shall; but then I'm most likely to want it. Plummer will have one."

I thought it well worth while, and I took my regulation "Webley"—a relic of my old Volunteer captaincy. Then, by way of the underground railway, I gained the neighbourhood of Mile End, and interested myself about its back streets till the time approached to look for Plummer's cab.

Plummer was more than punctual—indeed, he was two or three minutes before his time. The cab drew near the kerb and scarcely stopped, so quickly did I scramble in.

"Good," said Plummer; "we're well ahead of time. Mr. Hewitt quite right?"

"Yes," I said. "I left him so an hour and a half ago at his office." And we sat silent while the cab rattled and rumbled over the stony road to Bow Bridge, and the shopkeepers on the way put up their shutters and extinguished their lights.

Bow Bridge was reached and passed, and presently we stopped the cab and alighted. Here Styles, Plummer's man, took the lead, and a little way farther along the road we turned into a dark and muddy lane on the left. We floundered through this for some hundred and fifty yards or so, and then suddenly drew in at an opening on the right. Here we stood for a few moments while our guide groped his way down toward the muddy water we could smell, rather than see, a little way before us.

There were a few broken steps and a broad black thing which was the boat. We got into it as silently as we could manage, and cast off. It was a clumsy, broad-beamed, leaky old conveyance, and that it was as dirty as Hewitt had described it I could feel as I groped for the sculls and got them out. The night was light and dark by turns—changing with the clouds. We shipped the rudder, and Styles steered, or I should probably have run ashore more than once, for the banks were not always distinct, and the channel was narrow and dark. We passed the black forms of several factories with tall chimneys, and then drew out among the Marshes, flat and grey, with wisps of mist lying here and there. So we went in silence for a while, till at last we drew in against the bank on the left and laid hold by a post at a landing-place.

"This is the Channel Marsh," whispered Styles, as we climbed cautiously ashore. "We can't see the house very well from here, but there's where Mr. Hewitt will come through."

Looking over the top of the low bank, we could discern a path which traversed the length of the marsh, entering it by a broken gate at a neck of land which we must have passed on our way. Here we crouched and waited. We had heard the half-hour struck on some distant clock soon after entering the boat, and now we waited anxiously for the three-quarters. So long did the time seem to my excited perceptions that I had quite decided that the clock must have stopped, or, at any rate, did not chime quarters, when at last the strokes came, distant and plaintive, over the misty flats.