Simon, Jane, and Barney, enlisted by their mysterious great-uncle, arrive in a small coastal town to recover a priceless golden grail stolen by the forces of evil -- Dark. They are not at first aware of the strange powers of another boy brought to help, Will Stanton -- nor of the sinister significance of the Greenwitch, an image of leaves and branches that for centuries has been cast into the sea for good luck in fishing and harvest. Their search for the grail sets into motion a series of disturbing, sometimes dangerous events that, at their climax, bring forth a gift that, for a time at least, will keep the Dark from rising.
Third in The Dark is Rising series.
Susan Mary Cooper (born 23 May 1935) is an English author of children's books. She is best known for The Dark Is Rising, a contemporary fantasy series set in England and Wales, which incorporates British mythology, such as the Arthurian legends, and Welsh folk heroes. For that work, in 2012 she won the lifetime Margaret A. Edwards Award from the American Library Association, recognizing her contribution to writing for teens. In the 1970s two of the five novels were named the year's best English-language book with an "authentic Welsh background" by the Welsh Books Council. [Wikipedia]