The first three novels in the series introduced Jacob Portman and the special world he discovers. This world was threatened by a hostile splinter faction and their monstrous servants, but Jacob and his friends helped to defeat them. That journey ended where it all began for Jacob, back in Florida, reunited with Emma and the others. The third book concluded with a set of tantalizing promises and questions about the protagonists' future. Now, in a thrilling new story arc, Jacob's adventure continues as more secrets are revealed - all set against the rich landscapes of American history.