CHILDREN'S FICTIONPedro lives in the village of Marbleville, where his father works at the marble mines. In the mines, men carefully dig rocks. Some of these rocks, when cracked open, contain beautiful glass marbles. One day, Pedro's grandparents decide to make a visit. It just so happens that their arrival coincides with a rather magical marble happening. Pedro's father comes home from work with rocks from the mines. These rocks reveal special marbles unlike any Pedro has seen before. There are many stories about the marbles of Marbleville, as well as the mine. For instance, whole families have gone missing there, and Pedro's newfound marbles might hold some clues.He shows his grandmother the special marbles, and she sees them as a sign. Many years ago, the mother of the present mine owner entrusted her with letters. Pedro's family finally reads the letters, and they unveil an amazing secret that takes Pedro into the past. He soon discovers his new marbles really are magic--and they might be his only ticket back home