CHAPTER XVII

/It/ seemed an eternity before the tide turned and began slowly to make its noisy way up the beach. Most of the time she was alone in the little recess, for Brill made periodical reconnaissances into the mouth of the cave. She would have accompanied him, but he explained the difficulties she would find. “It is quite dark until the tide comes in, and then we get the reflected light from the water and you can see your way about quite easily.” “Is there anybody there?” He nodded. “Two chaps who are tinkering about wit…