"What makes you think so?"

"Why the whole crowd of them have come aft and are looking at us for all they're worth."

"Are they using glasses?"

"No—yes, they are too! A new man has come up on deck, and he's got a pair. He's training them on us."

"Good! That shows they're worried. Take our glasses and see what you can make out."

Andy looked long and earnestly. Then he let out a yell.

"It's him! It's that mysterious man!" he shouted. "He's excited, too, for he's making motions to the crew!"

"Good! Watch him carefully. We'll be up to them in about five minutes."

Andy watched. In a minute he gave another cry.

"What is it?" asked Frank.