Allie, Jay, the Boggart, and his cousin Nessie strive to stop an American developer from destroying their home, even if that means waking up deadly Old Magic creatures.
In this conclusion of the tale begun in "Over Sea, Under Stone," Will Stanton, the Welsh boy Bran, and the Drew children try to locate the crystal sword that alone can vanquish the strong forces of Dark.
Jane's invitation to witness the making of the Greenwitch begins a series of sinister events in which she and her two brothers help the Old Ones recover the grail stolen by the Dark.
Three children on vacation in Cornwall find an ancient manuscript which sends them on a dangerous quest that entraps them in the eternal battle between the forces of the Light and the Dark.
A strange boy and dog remind Will Stanton that he is an immortal, whose quest is to find the golden harp which will rouse others from a long slumber in the Welsh hills so they may prepare for the ultimate battle of Light versus Dark.
Three children on a holiday in Cornwall find an ancient manuscript which sends them on a dangerous quest for a grail that would reveal the true story of King Arthur.
