Harry potter and the Order of the Phoenix

J.K ROWLING 

(Book 5 in series)

Harry Potter is due to start his fifth year at Hogwarts School of Witchcraft and Wizadry. He is desperate to get back to school and find out why his friends Ron and Hermione have been so secretive all summer. However, what Harry is about to discover in his new year at Hogwarts will turn his whole world upside down ...