Joe noticed that the stranger cast frequent anxious glances toward the shore. Suddenly an expression of alarm crossed the man's face, and Joe saw that he was watching two figures who had appeared on the road and who were running along, waving their arms, evidently trying to attract attention.
"Somebody signaling to us," he said to Frank.
Frank looked up. The two men on the road were making frantic efforts to draw attention, as they waved their arms and leaped about like lunatics.
"Friends of yours?" asked Frank of their passenger.
The florid-faced man laughed. The laugh was meant to be carefree and hearty, but there was no disguising the note of uneasiness beneath it.
"Yes—yes, they're friends of mine," he admitted. "I put one over on them that time." He chuckled nervously. "They're just beginning to realize that I've given them the slip."
"What's the big idea?"
"That's the time I fooled them." The stranger laughed loudly—too loudly, in fact. "You see, I'm going to be married. That's why I have to catch that train. I kept it a secret until this morning, but my friends got wind of it and thought they'd play a practical joke on me. I started out in plenty of time for the train, but they had fixed the engine of my car so it broke down and I had to come back to Barmet. They were trying to hold me back, and for a while I was beginning to think that they had got away with it. But I bested 'em. I fooled 'em that time."
He laughed again, but still there was that note of insincerity in his mirth that had aroused the suspicions of the Hardy boys at first. They said nothing, and the stranger evidently thought his story had been believed, for he sat back in the boat with a complacent air.
But Frank glanced again at the two men on the road. For practical jokers, they seemed to be making a tremendous fuss over their friend's escape. They were still waving their arms, evidently trying to signal to the boat to turn back.