"A young boy finds a faded, home-made Advent calendar in a bookshop. A piece of paper falls out of the first window on which is written the first part of an extraordinary story about a small girl who travels back in time to Bethlehem and the birth of Christ... Meanwhile, the intertwining story of the present unfolds, and the boy finds out about the strange man who made the calendar and about a girl who disappeared on Christmas Eve 40 years ago... compelling reading"DAILY TELEGRAPH