Harry Potter and the Half-Blood Prince continue. Harry finds out that the locket is not the real Horcrux, containing only a note from someone named "R. A. B.". Harry is so devastated by Dumbledore's death (and upset by its futility) that he tells his friends he will not be returning to Hogwarts. Instead, he will spend the next year searching out Voldemort's Horcruxes. Ron and Hermione insist on joining him in destroying Lord Voldemort for good. "Harry Potter and the Half-Blood Prince" is the sixth book in the Harry Potter series. The first book in the series, "Harry Potter and the Philosopher's Stone", was first published
Harry Potter and the Philosopher's Stone Potter and the Order of the Phoenix" is the longest book in the series at 766 pages in the UK version and 870 pages in the US version. It was published worldwide in English on June 21, 2003. "Harry Potter and the Half-Blood Prince" was published on July 16, 2005 and sold 11 million copies in the first 24 hours of its worldwide release. The seventh and final novel, "Harry Potter and the Deathly Hallows", was published on July 21, 2007. The book sold 11 million copies within 24 hours of its release: 2.7 million copies in the UK and