Nadia Bethell: 2 books

This book is the continuation of the story of Bradley and Megan, the twins, about their adventures in the World of the Unknowns. In the previous book, “The World of the Unknowns: The Discovery”, Bradley and Megan, and their friend and neighbor John, visit the World of the Unknowns, where they...

On the way to school Bradley, his twin sister Megan and their friend and neighbor John find a small shed-like building that was not there before. They don't know that it serves as an portal into another world, the World of the Unknowns. When the three get transported into this world, little by little...