Hardback novelty book with a detachable board van with velcro and ribbon. A chance for children to drive Pat's van through the lanes of Greendale and help Pat with his deliveries. Postman Pat has forgotten to post his postcards while he is on holiday so he decides to hand deliver them when he gets back. He's very secretive about where he went - "just wait till you get your cards" he smiles. But when the cards arrive they are very strange cards indeed - just bits of a picture. When everyone gathers together in the village hall they begin to piece together the mystery.