The Dark Is Rising (The Dark is Rising, #2)
by Susan Cooper (Goodreads Author)

4.5 out of 5 stars

Will Stanton is the seventh son of a seventh son. On his 11th birthday, he discovers that he is an Old One, a special race of people who are endowed with magical abilities so that they can protect humanity from the Dark. Will is trained in his new abilities by Merriman Lyon (the modern Merlin). Will is sent on a quest through time to retrieve the Signs, which will help the Light to keep back the Dark Rider.