Ladies and gentlemen this book is much darker, much more mature than the first 4 books. Harry in his fifth year of Hogwarts; his hardest year yet.
It's the end of the summer holidays and after a confrontation with Dudley Dursley and his little gang both Dudley and Harry are attacked by a Dementor, forcing Harry to use a Patronus charm. The Ministry of Magic are quick to charge Harry with the crime of 'underage magic' and it is only with Dumbledore's help and that of the Dursley's neighbour, who is in fact a squib (a witch or wizard of pure blood who has no magic ability) and has been looking out for Harry all these years that sees the Ministry clearing Harry of all charges as his hearing.
