June was on hand according to agreement, and Doris was able to accompany her. As they were driving away from the academy, June said: “I wasn’t sure you would come. I almost thought you might not.” To the surprise of Doris, it seemed as if there was something of disappointment and regret in her companion’s voice. “Why, don’t you want me to?” she asked in surprise. “Oh, yes—yes, of course.” Still Doris was not satisfied, and a feeling of uneasiness began to creep over her. Having reached the wharf at which the yacht lay, they left the carriage and went on board. The captain was on hand and apparently expecting them. He escorted them to the cabin. Somehow June seemed strangely nervous and excited; Doris fancied she was not at all like herself. The yacht was commodious and comfortable, although not extremely large, and it interested Doris exceedingly. Indeed, she was so absorbed in looking about that she did not notice a strange tremor of movement which ran over the craft. June observed it, and her face paled, but she said nothing. At length Doris noted with surprise that something of a suspicious nature was happening. “Why—what is it?” she questioned, looking at June in alarm. “The yacht is moving! How is that?” Even as she spoke a boy appeared in the doorway and bowed smilingly. “It means that we are going to take a little cruise,” he declared. “I am delighted to have such agreeable company.” It was Chet Arlington! Doris turned even paler than June. “Chester Arlington,” she cried, “you don’t mean that? You can’t mean it! Why, you wouldn’t dare!” He shrugged his shoulders. “It’s plain you don’t know me. I have taken a fancy to make a little cruise on this yacht, and, of course, I am not to blame if you chance to be aboard at the time, I am sure you will enjoy it. You can’t help it. I will do my best to make it pleasant for you.” At this June suddenly sprang toward her brother. “Chester!” she exclaimed, catching her breath; “you promised me——” “Oh, never mind. That’s all right, sis. Don’t get excited.” “But you promised me we would take a run only a short distance and then return.” “I have not said how far we are going,” he coolly answered. “But it seems to me we may not be able to get back into the harbor to-night. It’s a little dangerous after dark.” “You can get back if you can get out.” “We will talk that over later. Make yourselves at home, girls.” “Chester, order Captain Long to run back at once!” cried June. “Sorry I can’t oblige you, sis.” “You won’t do it for me?” she questioned. “No, not even for you, June.” “Perhaps he will do it for me,” said a calm voice, and the sound of that voice caused Chester to give a mighty start and turn, his own face blanching. Another boy had descended the companionway and stood just outside the door. “Merriwell!” gasped Chet. “Exactly,” said Dick. “How did you get on board?”