The air was chilly, but excitement kept us from feeling the need of our great-coats. Beneath our feet the ground was soft but dry, and the leaves were scattered about in profusion; for this was the fall of the year and the woods had begun to strip at the touch of the frost king. Quintus Oakes stood by my side behind a tree. We were both gazing intently in the direction that had been indicated to us. Nothing was visible for a few moments, when suddenly Oakes pressed my shoulder with his hand and said in a low, quiet voice: "See--off there, that flash!" I had noticed nothing, but as I drew breath to answer, I beheld the diverging rays of a light--probably a lantern--play up and down a tree-trunk at least a hundred feet away. It moved quickly, and then jumped to another trunk; in its transit it threw a long, narrow yellow streak on the ground between. Then it would be lost suddenly to our view. I thought the trees intervened in our line of vision at such times, but Oakes explained: "He is waiting and signalling with a dark lantern; see how the light is shut off at will. He is surely within a hut of some kind; I can see the outlines occasionally." "What can he be up to?" I whispered. "He is at least a mile from the Mansion, and nearly as much from the road." "That light is a guide," said Oakes. "His confederate cannot find the hut without it; the forest is too dense." We waited in silence, stealing very carefully nearer to the hut, and our patience was finally rewarded. We saw the door, which was sidewise to us, open with a quick movement and a man enter. Then all was dark within and without, save in one little spot where, through the back wall of the hut, a few rays found exit in long, narrow streaks of yellow light, scarcely visible to us. "He has turned his bull's eye away from the window and the door, and has not shut it. They are using the light for some purpose," said the detective, touching my arm and motioning me to follow him. With utmost caution we advanced until we were near enough to hear voices. At first they came to us as a low, indistinct muttering, but as we neared the hut we determined that they were raised in argument. At our distance, however, we were unable to recognize either. "Keep away from the front," said Oakes, "lest the door be opened and we be discovered." We stationed ourselves in the shadow near the window, which was low in the side of this curious log-cabin--for such we saw it to be. It was boarded inside evidently, for the light was kept from without too well. Through the window we beheld two dim forms bending over a board table. One was handling something like paper, in the diverging streak of illumination from the bull's eye opening of the lantern, which was on the table, facing the back wall of the hut, just as Oakes had said.