His motion was scarcely perceptible. None the less he was near the middle of the loch almost as soon as another clump of green branches. Doubtless the swimmer beneath it was confident that he was now safe from observation.
The two clumps of green branches drew nearer. The smaller seemed a mere estray, a spray blown down by the recent gale. But all at once the larger clump jerked awkwardly and stopped. Simultaneously a strange, low strain of music came from the other.
The strain ceased. The two clumps of green branches remained motionless. Slowly, at last, the larger moved forward. It was too dark for the swimmer to see if any one lay hid behind the smaller. When he reached it he thrust aside the leaves.
It was as though a great salmon leaped. There was a splash, and a narrow, dark body shot through the gloom. At the end of it something gleamed. Then suddenly there was a savage struggle. The inanimate green branches tore this way and that, and surged and swirled. Gasping cries came from the leaves. Again and again the gleaming thing leaped. At the third leap an awful scream shrilled through the silence. The echo of it wailed thrice, with horrible distinctness, in the corrie beyond Cnoc-an-Fhraoch. Then, after a faint splashing, there was silence once more. One clump of green branches drifted slowly up the lochlet. The other moved steadily toward the place whence, a brief while before, it had stirred.
Only one thing lived in the heart of Gloom Achanna—the joy of his exultation. He had killed his brother Sheumais. He had always hated him because of his beauty; of late he had hated him because he had stood between him, Gloom, and Katreen Macarthur—because he had become her lover. They were all dead now except himself, all the Achannas. He was "Achanna." When the day came that he would go back to Galloway, there would be a magpie on the first birk, and a screaming jay on the first rowan, and a croaking raven on the first fir; ay, he would be their suffering, though they knew nothing of him meanwhile! He would be Achanna of Achanna again. Let those who would stand in his way beware. As for Katreen: perhaps he would take her there, perhaps not. He smiled.
These thoughts were the wandering fires in his brain while he slowly swam shoreward under the floating green branches, and as he disengaged himself from them and crawled upward through the bracken. It was at this moment that a third man entered the water from the further shore.
Prepared as he was to come suddenly upon Katreen, Gloom was startled when, in a place of dense shadow, a hand touched his shoulder, and her voice whispered:
"Sheumais, Sheumais!"
The next moment she was in his arms. He could feel her heart beating against his.
"What is it, Sheumais? What was that awful cry?" she whispered.