Suddenly Sir Mark's eye fell upon the key of the upper room, which lay on the window-ledge where he had thrown it; and the desire to go up and pluck the heart from the little mystery came upon him with a strength that he could not resist; he rose twice and took up the key, and fingering it doubtfully, laid it down again; then suddenly he took it up, and went swiftly into the turret-stair, and up, turning, turning, till his head was dizzy with the bright peeps of the world through the loophole windows. Now all was green, where a window gave on the down; and now it was all clear air and sun, the warm breeze coming pleasantly into the cold stairway; presently Mark heard the pattering of feet on the stair below, and knew that the old hound had determined to follow him; and he waited a moment at the door, half pleased, in his strange mood, to have the company of a living thing. So when the dog was at his side, he stayed no longer, but opened the door and stepped within the room.
The room, for all its faded look, had a strange air about it, and though he could not say why, Mark felt that he was surely expected. He did not hesitate, but walked to the shutter and considered it for a moment; he heard a sound behind him. It was the old hound who sat with his head aloft, sniffing the air uneasily; Mark called him and held out his hand, but the hound would not move; he wagged his tail as though to acknowledge that he was called, and then he returned to his uneasy quest. Mark watched him for a moment, and saw that the old dog had made up his mind that all was not well in the room, for he lay down, gathering his legs under him, on the threshold, and watched his master with frightened eyes, quivering visibly. Mark, no lighter of heart, and in a kind of fearful haste, pulled the great staple off the shutter and set it on the ground, and then wrenched the shutters back; the space revealed was largely filled by old and dusty webs of spiders, which Mark lightly tore down, using the staple of the shutters to do this; it was with a strange shock of surprise that he saw that the window was dark, or nearly so; it seemed as though there were some further obstacle outside; yet Mark knew that from below the leaded panes of the window were visible. He drew back for a moment, but, unable to restrain his curiosity, wrenched the rusted casement open. But still all was dark without; and there came in a gust of icy wind from outside; it was as though something had passed him swiftly, and he heard the old hound utter a strangled howl; then turning, he saw him spring to his feet with his hair bristling and his teeth bare, and next moment the dog turned and leapt out of the room.
Mark, left alone, tried to curb a tide of horror that swept through his veins; he looked round at the room, flooded with the southerly sunlight, and then he turned again to the dark window, and putting a strong constraint upon himself, leaned out, and saw a thing which bewildered him so strangely that he thought for a moment his senses had deserted him. He looked out on a lonely dim hillside, covered with rocks and stones; the hill came up close to the window, so that he could have jumped down upon it, the wall below seeming to be built into the rocks. It was all dark and silent, like a clouded night, with a faint light coming from whence he could not see. The hill sloped away very steeply from the tower, and he seemed to see a plain beyond, where at the same time he knew that the down ought to lie. In the plain there was a light, like the firelit window of a house; a little below him some shape like a crouching man seemed to run and slip among the stones, as though suddenly surprised, and seeking to escape. Side by side with a deadly fear which began to invade his heart, came an uncontrollable desire to leap down among the rocks; and then it seemed to him that the figure below stood upright, and began to beckon him. There came over him a sense that he was in deadly peril; and, like a man on the edge of a precipice, who has just enough will left to try to escape, he drew himself by main force away from the window, closed it, put the shutters back, replaced the staple, and, his limbs all trembling, crept out of the room, feeling along the walls like a palsied man. He locked the door, and then, his terror overpowering him, he fled down the turret-stairs. Hardly thinking what he did, he came out on the court, and going to the great well that stood in the centre of the yard, he went to it and flung the key down, hearing it clink on the sides as it fell. Even then he dared not re-enter the house, but glanced up and down, gazing about him, while the cloud of fear and horror by insensible degrees dispersed, leaving him weak and melancholy.
Presently Roland returned, full of talk, but broke off to ask if Mark were ill. Mark, with a kind of surliness, an unusual mood for him, denied it somewhat sharply. Roland raised his eyebrows, and said no more, but prattled on. Presently after a silence he said to Mark, "What did you do all the morning?" and it seemed to Mark as though this were accompanied with a spying look. An unreasonable anger seized him. "What does it matter to you what I did?" he said. "May not I do what I like in my own house?"
"Doubtless," said Roland, and sate silent with uplifted brows; then he hummed a tune, and presently went out.
They sate at dinner that evening with long silences, contrary to their wont, though Mark bestirred himself to ask questions. When they were left alone, Mark stretched out his hand to Roland, saying, "Roland, forgive me! I spoke to you this morning in a way of which I am ashamed; we have lived so long together—and yet we came nearer to quarrelling to-day than we have ever done before; and it was my fault."