It was highly probable that they would not be missed until the arrival at the harbour. Then, no doubt, someone would come back for them, but the tide was rising rapidly, and perhaps by the time a boat could return it would not be possible to land and take them off. The prospect of a night spent on a desert island was not enlivening. Then, too, came another fear. The mysterious stranger was in the near neighbourhood. Hidden behind rocks and creeks he might have accomplices, who might take it into their heads to reconnoitre. The idea was horrible. They felt an intense dread of the unknown man in the brown jersey. He must be very angry that they had discovered his signal. Suppose he were to find them, and wreak his vengeance upon them? They bitterly rued their folly, though that did not mend matters in the least. "We won't go over to that side of the island again, in case he might see us," quavered Dulcie. "Let us sit down here, in this sheltered corner. How cold it's getting!" "I'm hungry, too," sighed Deirdre. "There's nothing to eat on the place except raw periwinkles!" The sun had set behind a bank of grey clouds, and even in the last ten minutes the daylight had faded noticeably. A chilly wind had sprung up, and the girls shivered as they buttoned their coats closely. "Do you hear something?" said Dulcie presently. It was a sound of oars, and both pricked up their ears, half-nervously, half-hopefully. They did not venture to show themselves till they could ascertain whether it were friend or enemy. Hidden under the shadow of the rock, they watched the darkening water, then gripped each other's hands in terror--it was the white boat that appeared round the corner. Its brown-jerseyed occupant was rowing slowly and leisurely, with a careful eye on the shore as he went. Would he see them? They were only partially concealed, and a keen observer might easily detect their presence. To Deirdre those few minutes equalled years of agony--her lively imagination summoned up every possible horror. He paused at last on his oars, and gave the long shrill curlew call. A hundred seagulls screamed in reply. Twice, thrice he repeated it, then apparently judging it a failure, he rowed away in the direction of the mainland. Dulcie was crying with fright and cold. She let the tears trickle unwiped down her plump cheeks. She was not cut out by nature for a heroine, and would gladly just then have given up all chance of seeing her portrait in the newspapers if she could have found herself safely back in the schoolroom at the Dower House. Adventures might be all very well in their way, but this one had gone decidedly too far. "I wish you'd never suggested our coming," she said fretfully. "It was your fault, Deirdre." "Don't be mean, and try and throw the blame on me! You were just as keen as I was!" "I'm not keen now! I wish to goodness we'd never bothered our heads about Gerda. You won't catch me on such a wild-goose chase again!"