Pencils, erasers, and disqualification -- Buckets and spectacles -- Squares and arrows -- The trouble with children or, why they are necessary -- The sender and the messages -- The men in the maze -- Codes and histories -- The thing to come -- The naming of the crew -- Nomansan Island -- Traps and nonsense -- Beware the Gemini -- Lessons learned -- People and places to be avoided -- Logical conclusions and miscalculations -- Poison apples, poison worms -- A surprising suggestion -- Tests and invitations -- Everything as it should be -- Of families lost and found -- Tactical cactupi -- Caught in the act -- The waiting room -- Punishments and promotions -- Half a riddle -- The whisperer -- Open sesame -- Practice makes perfect -- Know thine enemy -- A chess lesson -- The mouse in the culvert -- Sacrifices, narrow escapes, and something like a plan -- Bad news and bad news -- Sticky's discovery -- The Great Kate Weather Machine -- Stands and falls -- The best medicine -- Escapes and returns -- For every exit, an entrance.