As we started to descend the precipitous path the Inspector sang out a cheery "Hullo!" The man on duty in the box immediately answered. His voice echoed and reverberated down the cutting, and the next moment he appeared at the door of the box. He told us that he would be with us immediately; but we called back to him to stay where he was, and the next instant the Inspector and I entered the box. "The first thing to do," said Henderson the Inspector, "is to send a message down the line to announce our arrival." This he did, and in a few moments a crawling goods train came panting up the cutting. After signalling her through we descended the wooden flight of steps which led from the box down to the line and walked along the metals towards the tunnel till we stood on the spot where poor Davidson had been found dead that morning. I examined the ground and all around it most carefully. Everything tallied exactly with the description I had received. There could be no possible way of approaching the spot except by going along the line, as the rocky sides of the cutting were inaccessible. "It is a most extraordinary thing, sir," said the signalman whom we had come to relieve. "Davidson had neither mark nor sign on him--there he lay stone dead and cold, and not a bruise nowhere; but Pritchard had an awful wound at the back of the head. They said he got it by climbing the rocks--here, you can see the marks for yourself, sir. But now, is it likely that Pritchard would try to climb rocks like these, so steep as they are?" "Certainly not," I replied. "Then how do you account for the wound, sir?" asked the man with an anxious face. "I cannot tell you at present," I answered. "And you and Inspector Henderson are going to spend the night in the signal-box?" "Yes." A horrified expression crept over the signalman's face. "God preserve you both," he said; "I wouldn't do it--not for fifty pounds. It's not the first time I have heard tell that Felwyn Tunnel is haunted. But, there, I won't say any more about that. It's a black business, and has given trouble enough. There's poor Wynne, the same thing as convicted of the murder of Pritchard; but now they say that Davidson's death will clear him. Davidson was as good a fellow as you would come across this side of the country; but for the matter of that, so was Pritchard. The whole thing is terrible--it upsets one, that it do, sir."