Emma and Grace are sisters, and last year they discovered that their grandmother's house holds a secret down in the depths of the cellar; a doorway to ancient lands using Gran's special crystals. The first book in the Crystal Waters series took Emma and Grace through Europe, but now in book two, a new adventure begins with a new quest: to help their Native American friends Tom and Seanile return back to ancient North America and find their tribe, which have mysteriously disappeared. This adventure is full of surprises and Gran's confession to the girls will change their lives forever. Join the girls, Robert and Herman, along with his strange coloured dog Ceber, through their journey in this epic tale that takes themes from the greatest legends of the world.