The dark is rising sequence - Susan Cooper

This spellbinding volume brings together the five novels from Susan Cooper's classic fantasy sequence: Over Sea, Under Stone; The Dark is Rising; Greenwitch; The Grey King; and Silver on the Tree. Here Barney, Jane and Simon discover an ancient map in Cornwall; the mysterious Merriman reveals his secret purpose; and Will Stanton realizes that he is not just an ordinary boy but has a far greater role in fulfilling his destiny. Creating a magical world where the everyday mingles with the supernatural, The Dark is Rising Sequence weaves a story of secret codes, strange prophecies, the legend of King Arthur and a centuries-old conflict between the power of good and the forces of evil.