He steered the motorboat away from the vicinity of the schooner, but instead of going on into the harbor he put out to sea again.
"It won't be long until it gets darker. Then we'll go back. If Chet is on that ship we'll get word to him somehow."
"Well, if it isn't Chet Morton it's his double," declared Joe. "Even if I didn't get a very good look at him, I know he was just about the same height and build and the same general appearance. What puzzles me is why he didn't call out to us. And why did he draw back from the rail in such a hurry?"
"He mightn't have had time to call to us. Perhaps he managed to escape just for a minute or so and they dragged him back before he could give a shout."
"There's something in that. And of course he mightn't have recognized us."
"He would have recognized the boat, I'm sure."
"There's something queer about it. If we come back later on we may be able to see him again. Did you notice the name of the schooner?"
"Yes," answered Frank. "I watched for it. The Persis. I think what we'd better do is this: We'll go back down the coast and loaf around until it gets darker. Then we'll come back to the harbor and try to come up to the schooner quietly. If there's a rope ladder handy I'll go up over the side and see what I can find out."
"It looks like our only chance. You'll have to go easy. If Chet and Biff are held prisoners on that ship they'll be well guarded. You might be captured yourself."
"That's where you will come in. If you hear sounds of a struggle or if I don't come back, go right into the harbor and notify the police so they can have the schooner searched."