Gwyn Griffiths ninth birthday isn't a happy occasion because it also was the day 4 years earlier when his sister Bethan mysteriously disappeared. But his life is about to be changed forever.Gwyn Griffiths ninth birthday isn't a happy occasion because it also was the day 4 years earlier when his sister Bethan mysteriously disappeared. But his life is about to be changed forever.Gwyn Griffiths ninth birthday isn't a happy occasion because it also was the day 4 years earlier when his sister Bethan mysteriously disappeared. But his life is about to be changed forever.