The Lodestone

When twelve year old Jack Paris feels the small jaws of a creature that shouldn't exist clamp down on his leg, life as he knows it in small-town northeast Texas comes to a sudden end. Miss Edna, his foster mom, is forced to take him and his friend Sally to a world she secretly forsook two hundred years before to save his life. There Jack discovers that an evil wizard needs him for unknown purposes and will stop at nothing to capture him. The wizard pursues Jack and Sally through forests and under mountains on the other world, and even across Kansas back on Earth. With all their hope placed in Miss Edna, she suddenly disappears, leaving Jack and Sally to carry on without her. It soon becomes clear, however, that the events of the present are tied to Miss Edna's past, and the children begin a desperate effort to find her before all hope is lost. When Jack finally realizes why the wizard needs him, he learns that to live and love, you sometimes have to be willing to die.