Dark is rising sequence

"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."--Provided by publisher.

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.

"In this conclusion of a 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 the Dark."--Provided by publisher.