Adapted from the children's novel by Philippa Pearce, Tom is a 14-year-old sent off to visit his aunt and uncle (Greta Scacchi and James Wilby) in the 1950s English countryside. At first there seems not much to do, but then one night, just as he's falling asleep, the old grandfather clock strikes thirteen and Tom finds a whole new world in his back yard - literally. Enchanting family fare.