Night fell very still and windless, and when not long before midnight we let ourselves silently out of the lodge, though to the east the sky was clear, a black continent of cloud was creeping up from the west, and had now nearly reached the zenith. Out of the remote fringes of it occasional lightning winked, and the growl of very distant thunder sounded drowsily at long intervals after. But it seemed to me as if another storm hung over our heads, ready every moment to burst, for the oppression in the air was of a far heavier quality than so distant a disturbance could have accounted for. To the east, however, the sky was still luminously clear; the curiously hard edges of the western cloud were star-embroidered, and by the dove-coloured light in the east it was evident that the moonrise over the moor was imminent. And though I did not in my heart believe that our expedition would end in anything but yawns, I was conscious of an extreme tension and rawness of nerves, which I set down to the thunder-charged air.
For noiselessness of footstep we had both put on india-rubber soled shoes, and all the way down to the pool we heard nothing but the distant thunder and our own padded tread. Very silently and cautiously we ascended the steps of the gate away from the river, and keeping close to the wall inside, sidled round to the river gate and peered out. For the first moment I could see nothing, so black lay the shadow of the rock-wall opposite across the pool, but by degrees I made out the lumps and line of the glimmering foam which streaked the water. High as the river was running this morning it was infinitely more voluminous and turbulent now, and the sound of it filled and bewildered the ear with its sonorous roaring. Only under the very base of the rock opposite it ran quite black and unflecked by foam: there lay the deep still surface of the backwater. Then suddenly I saw something black move in the dimness in front of me, and against the grey foam rose up first the head, then the shoulders, and finally the whole figure of a woman coming towards us up the bank. Behind her walked another, a man, and the two came to where the altar of stone had been newly erected and stood there side by side silhouetted against the churned white of the stream. Hugh had seen too, and touched me on the arm to call my attention. So far then he was right: there was no mistaking the stalwart proportions of Sandy.
Suddenly across the gloom shot a tiny spear of light, and momentarily as we watched, it grew larger and longer, till a tall beam, as from some window cut in the rock opposite, was shed on the bank below us. It moved slowly, imperceptibly to the left till it struck full between the two black figures standing there, and shone with a curious bluish gleam on the flat stone in front of them. Then the roar of the river was suddenly overscored by a dreadful screaming voice, the voice of a woman, and from her side her arms shot up and out as if in invocation of some power. At first I could catch none of the words, but soon from repetition they began to convey an intelligible message to my brain, and I was listening as in the paralytic horror of nightmare to a bellowing of the most hideous and un-nameable profanity. What I heard I cannot bring myself to record; suffice it to say that Satan was invoked by every adoring and reverent name, that cursing and unspeakable malediction was poured forth on Him whom we hold most holy. Then the yelling voice ceased as suddenly as it had begun, and for a moment there was silence again, but for the reverberating river.
Then once more that horror of sound was uplifted.
“So, Catrine Gordon,” it cried, “I bid ye in the name of my master and your’s to rise from where ye lie. Up with ye—up!”
Once more there was silence; then I heard Hugh at my elbow draw a quick sobbing breath, and his finger pointed unsteadily to the dead black water below the rock. And I too looked and saw.
Right under the rock there appeared a pale subaqueous light, which waved and quivered in the stream. At first it was very small and dim, but as we looked it seemed to swim upwards from remote depths and grew larger till I suppose the space of some square yard was illuminated by it. Then the surface of the water was broken, and a head, the head of a girl, dead-white and with long, flowing hair, appeared above the stream. Her eyes were shut, the corners of her mouth drooped as in sleep, and the moving water stood in a frill round her neck. Higher and higher rose the figure out of the tide, till at last it stood, luminous in itself, so it appeared, up to the middle. The head was bent down over the breast, and the hands clasped together. As it emerged from the water it seemed to get nearer, and was by now half-way across the pool, moving quietly and steadily against the great flood of the hurrying river.
Then I heard a man’s voice crying out in a sort of strangled agony.
“Catrine!” it cried; “Catrine! In God’s name; in God’s name!”
In two strides Sandy had rushed down the steep bank, and hurled himself out into that mad swirl of waters. For one moment I saw his arms flung up into the sky, the next he had altogether gone. And on the utterance of that name the unholy vision had vanished too, while simultaneously there burst in front of us a light so blinding, followed by a crack of thunder so appalling to the senses, that I know I just hid my face in my hands. At once, as if the flood-gates of the sky had been opened, the deluge was on us, not like rain, but like one sheet of solid water, so that we cowered under it. Any hope or attempt to rescue Sandy was out of the question; to dive into that whirlpool of mad water meant instant death, and even had it been possible for any swimmer to live there, in the blackness of the night there was absolutely no chance of finding him. Besides, even if it had been possible to save him, I doubt whether I was sufficiently master of my flesh and blood as to endure to plunge where that apparition had risen.