Advent - Advent Trilogy 1

For centuries it has been locked away Lost beneath the sea Warded from earth, air, water, fire, spirits, thought and sight. But now magic is rising to the world once more. And a boy called Gavin, who thinks only that he is a city kid with parents who hate him, and knows only that he sees things no one else will believe, is boarding a train, alone, to Cornwall. When he arrives, there is no one there to meet him.