A terrible scream—a prolonged yell of horror and anguish—burst out of the silence of the moor. That frightful cry turned the blood to ice in my veins.
“Oh, my God!” I gasped. “What is it? What does it mean?”
Holmes had sprung to his feet, and I saw his dark, athletic outline at the door of the hut, his shoulders stooping, his head thrust forward, his face peering into the darkness.
“Hush!” he whispered. “Hush!”
The cry had been loud on account of its vehemence, but it had pealed out from somewhere far off on the shadowy plain. Now it burst upon our ears, nearer, louder, more urgent than before.
“Where is it?” Holmes whispered; and I knew from the thrill of his voice that he, the man of iron, was shaken to the soul. “Where is it, Watson?”
“There, I think.” I pointed into the darkness.
“No, there!”
Again the agonised cry swept through the silent night, louder and much nearer than ever. And a new sound mingled with it, a deep, muttered rumble, musical and yet menacing, rising and falling like the low, constant murmur of the sea.
“The hound!” cried Holmes. “Come, Watson, come! Great heavens, if we are too late!”
He had started running swiftly over the moor, and I had followed at his heels. But now from somewhere among the broken ground immediately in front of us there came one last despairing yell, and then a dull, heavy thud. We halted and listened. Not another sound broke the heavy silence of the windless night.