The sun at length departed from the scene, with the riddle still unsolved. It appeared to Grenville the day-end breath would have wafted the stranger to the shore. He thought perhaps it did approach considerably closer, but of this he was not at all certain.
The brief, soft twilight soon began to wane. At Sidney's suggestion, their simple repast of island fruits was eaten. The fish they had captured in the morning was not cooked, in the absence of the customary fire. The calm that settled on the "Isle of Shalimar" was far from being reassuring. It seemed fraught with silent agencies of fate, moving noiselessly about the shadowed jungle.
When the darkness came down, the mysterious craft was no longer to be seen. Grenville had fancied it drifting rapidly in when he last discerned its form. No lights were displayed upon its mast or deck to indicate its presence off the headland.
Elaine was persuaded at last to retire, though she knew she should not sleep. Grenville remained on guard alone, pacing back and forth from the head of the trail to the lone tree reared above the cliff. His senses were strained to catch the slightest sound, but none came upward from the sea. From time to time he halted by their smoldering bit of coals to assure himself the last of the sparks had not been permitted to die.
At length, far in the silent night, the tidal wailing began, its weirdness increased an hundredfold by the tension of the hours. It seemed to Grenville unusually loud, so acute had the darkness made his hearing.
No sooner had the final note died out on the gently stirring air than answering cries, no less weird and shrill, arose from out upon the water. The visiting craft had drifted past the headland and was somewhere off on Grenville's right. The cries from its deck were like a response to some spirit of the island. They were rather more awed than exultant, Grenville felt, and he fancied some chanting, that came to him brokenly out of the heavy shades of night, was possibly a prayer.
When he came before her shelter again, Elaine was standing in the door. She had heard the cries from the boat.
"They haven't landed yet?" she said, in a whisper.
"They won't land now till daybreak, and perhaps not then," he answered. "Go back—and go to sleep."
"I'll try," said Elaine, and disappeared.