you did try. Suppose you saw to it that each of them had exactly the same experiences at the same times...." For a moment it seemed to Jack that the room was dimming and wavering, becoming a dark pool in which the only motionless thing was Kesserich's sphinx-like face. "Well, we've escaped quite far enough from Jamieson's marine worms," the biologist said, all brisk again. He said it as if Jack were the one who had led the conversation down wild and unprofitable channels. "Let's get on to your project. I want to talk it over now, because I won't have any time for it tomorrow." Jack looked at him blankly. "Tomorrow I must attend to a very important matter," the biologist explained. IV Morning sunlight brightened the colors of the wax flowers under glass on the high bureau that always seemed to emit the faint odor of old hair combings. Jack pulled back the diamond-patterned quilt and blinked the sleep from his eyes. He expected his mind to be busy wondering about Kesserich and his wife—things said and half said last night—but found instead that his thoughts swung instantly to Mary Alice Pope, as if to a farthest island in a world of people. Downstairs, the house was empty. After a long look at the cabinet—he felt behind it, but the key was gone—he hurried down to the waterfront. He stopped only for a bowl of chowder and, as an afterthought, to buy half a dozen newspapers. The sea was bright, the brisk wind just right for the Annie O. There was eagerness in the way it smacked the sail and in the creak of the mast. And when he reached the cove, it was no longer still, but nervous with faint ripples, as if time had finally begun to stir. After the same struggle with the underbrush, he came out on the rocky spine and passed the cove of the sea urchins. The spiny creatures struck an uncomfortable chord in his memory. This time he climbed the second island cautiously, scraping the innocent-seeming ground ahead of him intently with a boathook he'd brought along for the purpose. He was only a few yards from the fence when he saw Mary Alice Pope standing behind it. He hadn't realized that his heart would begin to pound or that, at the same time, a shiver of almost supernatural dread would go through him. The girl eyed him