“What’s the matter with you, Fred?” demanded George. “What are you so nervous about?”
“I don’t know. It seems funny to me though that a man like that should be hanging around our tent.”
“He’s probably waiting for us to come back.”
“Then why did he duck behind the tent the minute he saw us?”
“Maybe he didn’t see us at all.”
“The thing to do is to go down there and find out,” exclaimed Grant. “Come on, Pop, you and I will go anyway.”
“And so will I,” added John.
“I’ll go myself,” said Fred. “I’m not afraid; all I said was that I thought we ought to be careful.”
“We’ll be careful,” George assured him. “Come along.”
The little band once again started towards the tent. As Fred had remarked it seemed a strange thing that any man like the one George had seen should be loitering around their camp. They had had no visitors that summer aside from their opponents in the water sports and Mr. Maxwell, and the appearance of a stranger on the island was unusual enough to cause them some alarm.