The solutions to 10 mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the 10-year-old mastermind of Idaville's war on crime.
Mike, Brad and Sarah are trick-or-treating in Albany, NY... when Mike makes a mysterious discovery. Not realizing any danger, he and his friends ignore the new find and get ready for a Halloween party that night at their school. Mayhem insues..