This is a truly funny book written by Eoin Colfer, a very imaginative author. It starts with Will and Marty, two brothers, who are forced to go to the library during the summer holidays. They're worried that the librarian will shoot them with her spud gun if they go to the adult section. In the end of the book Will and Marty begin to like Spud Murphy, who know is a very generous librarian.The two characters Will and Marty are extremely strange, extra-ordinary and nervous as they are constantly worried that Spud Murphy will shoot them withher spud gun. This book is suitable for children aged between 9-12 who have some adventure in them. This book would make a very good comedy series.