The Greenstone Grail

From the flaps Del Rey first HB edition: "A desperate mother spirits away her infant son, seemingly driven (chased, perhaps?) to the small English village of Thornhill. She ends up on the doorstep of old Bartlemy): a curious man who has lived on the forested land for a long as anyone can remember - and who comes to believe that the child is destined for great things... While growing up under Bartlemy's protective eye, Nathan Ward senses something else watching him, a shift of shadows in the surrounding Darkwood. Then pieces of his dreams begin to come to life. A man he saved from the ocean washes ashore on the television news. A greenish stone cup set with jewels that has haunted his visions sounds eerily like one lost by the Thorn family centuries ago - a cup that has recently made its way back into the hands of the Thorns only remaining descendant. Yet when Nathan learns that the chalice may have come from another world, a land with bloodstained moons and a toxic sun, he knows he is destined to play a part in something beyond his most vivid imagination. But why is the cup here, and what could it possibly want with a teenage boy and a sleepy town of villagers full of tall tales? With the help of his best friend, Hazel, Nathan must figure out why he has been chosen - and for what purpose. Even if it means traveling deeper each night into dreams, into lands, into legends that both terrify and mesmerize him."