"But you must," Vera protested. "Let me assure you once more that I am as absolutely safe here as if I were in my own room. Now, come this way. I dare not strike a light. I can only take you by the hand and lead you to the top of the house. Every inch of the place is perfectly familiar to me, and you are not likely to come to the least harm. Please don't waste a moment more of your time." Gurdon yielded against his better judgment. A moment or two later, he found himself climbing through a skylight on to the flat leads at the top of the house. By the light of the town he could now see what he was doing, and pretty well where he was. From the leads he could look down into the garden, though, as yet, he could not discern any avenue of escape. "The thing is quite easy," Vera explained. "The late occupant of the house had a nervous dread of fire, and from every floor he had a series of rope ladders arranged. See, there is one fixed to this chimney. I have only to throw it over, and you can reach the garden without delay; then I will pull the ladder up again and no one will be any the wiser. Please, leave me without any further delay, in the absolute assurance that I shall be back again within an hour." A few minutes later Gurdon was in the street again, making his way back to the hotel where Venner was waiting for him. It was a strange story that he had to tell; a very thrilling and interesting adventure, but one which, after all, still further complicated the mystery and rendered it almost unintelligible. "And you mean to say that you have been actually face to face with our cripple friend?" Venner said. "You mean to say that he would actually have murdered you if Vera had not interfered in that providential manner? I suppose I must accept your assurance that she is absolutely safe, though I can't help feeling that she has exaggerated her own position. I am terribly anxious about her. I have an idea which I should like to carry out. I feel tolerably sure that this picturesque cripple of ours could tell us everything that we want to know. Besides, unless I do something I shall go mad. What do you say to paying the interesting cripple a visit to-morrow night, and forcing him to tell us everything?" Gurdon shook his head; he was not particularly impressed with the suggestion that Venner had made. "Of course, we could get into the house easily enough," he said. "Now that I have learned the secret of the cellar, there will be no difficulty about that. Still, don't you think it seems rather ridiculous to try this sort of thing when your wife is in a position to tell you the whole thing?"