“Wait, Sara!” Penny exclaimed. “Let’s leave the boat here.”

“Leave it here! Now that would be an idea! This little piece of floating wood represents nine hundred and fifty dollars.”

“I don’t mean that you’re to lose the boat,” Penny hastened to explain. “But if we take it now, we never will catch the fellow who stole it.”

“That’s true.”

“If we leave the boat here we can keep watch of the place and catch those scamps when they come back.”

“They may not come back,” Sara said, without warming to the plan. “Besides, I’ve no time to do a Sherlock Holmes in the bushes. I have my dock to look after.”

“Louise and I could do most of the watching.”

“Well, I don’t know,” Sara said dubiously. “Something might go wrong. I never would get over it if I lost the boat.”

“You won’t lose the boat,” promised Penny. “It’s really important that we catch those two men, Sara. From what Old Noah said, they may be connected with the bridge dynamiting.”

“What makes you think that?”