“I wonder what that means.”

“We’ll soon find out. Somehow, that boat looks familiar to me,” said Frank, as he steered toward the bay.

As they came closer, they saw that the other boat was deserted. Frank could not escape the conviction that he had seen the boat before. Slowly, he veered around until they ran alongside, within a hundred yards of the bay. Then he nodded.

“I knew it,” he said quietly.

“That’s the boat Tad Carson and Ike Nash were in the other day!” exclaimed Joe.

“There’s something queer about this business. I wondered why they were so close to Cabin Island when we met them. I’ll bet they were coming here to get Hanleigh.”

“Perhaps you’re right. What shall we do now, Joe?”

“Scout around a bit. We may learn something.”

Frank did not go toward the bay. Instead, he guided the boat around the arm of the island. The boys signaled back to Biff and Chet, indicating that they were to follow.

“It beats me why Tad and Ike should be here, unless they have some connection with this fellow Hanleigh,” said Frank.