we must keep our eyes open, and if anything goes wrong" He finished with a grave shake of his head.
"What are you boys plotting about?" asked Laura, as she came up. "Come, it won't do to stick together like this, with all the girls arriving. Dave, go and make folks at home, and you do likewise," she added, with a smile at Phil and Roger.
The boys dispersed and mingled with the arriving guests. Dave did all he could to make everybody feel at home, but all the while he was doing it he kept his eyes wide open.
Presently, chancing to look in the direction of the automobile house, Dave saw somebody skulking along a hedge. The person was visible only a second, so the youth could not make out who it was.
"Maybe it's all right, but I'll take a look and make sure," he told himself, and excused himself to a girl to whom he had been talking. As he hurried across the lawn he passed Phil.
"Come with me, will you?" he said, in a low voice.
"See anything?" demanded the shipowner's son.
"I saw somebody, but I am not sure who it was."
Taking care not to make his departure notice-
