Over Sea, Under Stone

While on holiday, the Drew children Barney, Simon, and Jane find a map in a hidden room in the Cornwall house, involving them and their great uncle, Merry, in a struggle between good and evil steeped in Arthurian legend. The first in the Dark is Rising sequence, the entire series exudes a strong sense of place and traditional tales. (The sequence continues with The Dark is Rising followed by Greenwitch, The Grey King, and concludes with Silver on the Tree.