The Keeper's First Book

Friends since before the academy, Tamar and Katina could always count on getting into mischief. After over-hearing the Academy council, they learn there is more to being a Keeper then learning to control magick. Given the job of researching magickal objects they discover the first clue to finding the greatest magickal object, The Keeper's First Book. Yet deep in the mines of Kablore, "The Evil One" escapes its imprisonment bent on returning to power.
As Tamar and Katina set off on a new adventure to find the book, "The Evil One" regains its strength. Now they must find the book quickly for it is the only what to stop the greatest evil of their world. With time running out, their only guide a river rider, they most find it before everyone they love is gone.