“How did they get in then?” asked Fenn.
“There must be some secret way that we don’t know about. We must find it. That’s how we can escape.”
“Perhaps it’s around the ventilators,” suggested Frank.
“We’ll take a look,” spoke Bart.
They soon found that the one in the bunk room would not admit the body of a child, to say nothing to that of a man. The one in the room where they had eaten was similar. As Bart, standing on the table, was examining it closely, he motioned to his companions to make no noise.
CHAPTER XXVII
THE ESCAPE
“What is it?” asked Ned in a whisper.