Harry Potter and the Order of the Phoenix by J. K Rowling

In the fifth installment of this iconic series, the young wizard Harry Potter returns for his fifth year at Hogwarts School of Witchcraft and Wizardry, only to discover that much of the wizarding world, including the Ministry of Magic, is in denial about the teenager's recent encounter with the evil Lord Voldemort. Harry is also beset by disturbing dreams while the sinister prison guards of Azkaban have been stationed at Hogwarts to protect the school, and Harry's budding abilities as a wizard are put to the test. Meanwhile, a secret society, the Order of the Phoenix, is working to fight Voldemort and his followers, and Harry's role in the coming conflict is becoming ever more significant.

The 432nd greatest book of all time