"All I know is that he is called the Captain."
"I see," said the boy. "Now, how comes it that you know so much of the plans of the Sea Lion?"
"What makes you think I do?"
"You found the groove in the door, and also the spring that opens the door to the water chamber."
"Oh, that!"
"Well?" the boy flourished his weapon, though nothing could have induced him to fire on the unarmed man.
"I was told what to do when I got here," was the reply.
"Did you see my chums on the way here?" The captive nodded.
"Where?"
"At the wreck."