The New Policeman (Whitbread Children's Book of the Year Award (Awards))

When his mother asks for "time" for her birthday, Irish teenager J.J. Liddy sets out to find it and stumbles upon Tir na n'Og, the land of the fairies, where he uncovers secrets about his family history, magic, the music that he loves, and a crime his great-grandfather may or may not have committed.