For an hour or so he worked all right, and then his thoughts began to wander from his books. The actual circumstances around him, the calls on his physical attention, and his nervous susceptibility were not to be denied. By this time the wind had become a gale, and the gale a storm. The old house, solid though it was, seemed to shake to its foundations, and the storm roared and raged through its many chimneys and its queer old gables, producing strange, unearthly sounds in the empty rooms and corridors. Even the great alarm bell on the roof must have felt the force of the wind, for the rope rose and fell slightly, as though the bell were moved a little from time to time and the limber rope fell on the oak floor with a hard and hollow sound. As Malcolmson listened to it he bethought himself of the doctor’s words, “It is the rope which the hangman used for the victims of the Judge’s judicial rancour,” and he went over to the corner of the fireplace and took it in his hand to look at it. There seemed a sort of deadly interest in it, and as he stood there he lost himself for a moment in speculation as to who these victims were, and the grim wish of the Judge to have such a ghastly relic ever under his eyes. As he stood there the swaying of the bell on the roof still lifted the rope now and again; but presently there came a new sensation—a sort of tremor in the rope, as though something was moving along it. Looking up instinctively Malcolmson saw the great rat coming slowly down towards him, glaring at him steadily. He dropped the rope and started back with a muttered curse, and the rat turning ran up the rope again and disappeared, and at the same instant Malcolmson became conscious that the noise of the rats, which had ceased for a while, began again. All this set him thinking, and it occurred to him that he had not investigated the lair of the rat or looked at the pictures, as he had intended. He lit the other lamp without the shade, and, holding it up went and stood opposite the third picture from the fireplace on the right-hand side where he had seen the rat disappear on the previous night. At the first glance he started back so suddenly that he almost dropped the lamp, and a deadly pallor overspread his face. His knees shook, and heavy drops of sweat came on his forehead, and he trembled like an aspen. But he was young and plucky, and pulled himself together, and after the pause of a few seconds stepped forward again, raised the lamp, and examined the picture which had been dusted and washed, and now stood out clearly.