The Lying Postman (Jack Russell: Dog Detective Series #4)

Theres a new postman in Doggerooand he doesnt know the rules of the Postman Game. Not only does he accuse Foxie of biting him but he also calls Jack a mongrel! And when Fat Molly Cat from the library comes to stay with Auntie Tidge things dont get any better. What did Jack find caught on the fence? Will it help him solve the case of THE LYING POSTMAN?