CHAPTER X - Louis, Owen and Sophie learn that they are not alone in this strange underground...far from it. One man has taken a particular interest in them. Will he help them to get home, or simply drive them deeper into the underground to leave them lost and alone for good?

CHAPTER IX - The children attempt to climb their way from the darkness and towards an ominous green light. But it takes them far longer than they imagined and they find themselves in more trouble than they can handle alone.