The Dr Hedgehog picture book series is intended to be read aloud to young children. Both the readers and the listeners will enjoy the stories. There are common characters, but each story can be read independently of the others. In most of the stories, Martin Mouse finds himself in awkward situations but Dr Hedgehog, usually with the help of other animals, is always able to assist. Children will recognise their mothers in Mavis Mouse, who worries about her son and is always greatly relieved when he arrives home safely. In this story, Mavis Mouse cannot find her son. Martin Mouse has fallen into a post-box and cannot climb out. How does Dr Hedgehog get him out?