<P> After unexpected events at the end of the previous year, Harry, Ron, and Hermione are entrusted with a quest to find and destroy Lord Voldemort's secret to immortality--the Horcruxes . It is supposed to be their final year at Hogwarts, but the collapse of the Ministry of Magic and Voldemort's rise to power prevents them from attending . The trio undergo a long journey with many obstacles in their path including Death Eaters, Snatchers, the mysterious Deathly Hallows, and Harry's connection with the Dark Lord's mind becoming ever stronger . </P> <P> After destroying one Horcrux and discovering the significance of the three Deathly Hallows, Harry, Ron and Hermione continue to seek the other Horcruxes in an attempt to destroy Voldemort, who has now obtained the powerful Elder Wand . The Dark Lord discovers Harry's hunt for Horcruxes and launches an attack on Hogwarts School, where the trio return for one last stand against the dark forces that threaten the Wizarding and Muggle worlds . </P> <P> The rights for the first four novels in the series were sold to Warner Bros. for £ 1,000,000 by J.K. Rowling . After the release of the fourth book in July 2000, the first film, Harry Potter and the Philosopher's Stone, was released on 16 November 2001 . In its opening weekend, the film grossed $90 million in the United States alone, which set a record opening worldwide . The succeeding three motion picture adaptations followed suit in financial success, while garnering positive reviews from fans and critics . The fifth film, Harry Potter and the Order of the Phoenix, was released by Warner Bros. on 11 July 2007 in English - speaking countries, except for the UK and Ireland, which released the movie on 12 July . The sixth, Harry Potter and the Half - Blood Prince, was released on 15 July 2009 to critical acclaim and finished its theatrical run ranked as the number two grossing film of 2009 on the worldwide charts . </P> <P> The final novel, Harry Potter and the Deathly Hallows, was split into two cinematic parts: Part 1 was released on 19 November 2010, and Part 2, the conclusion to both the final film and the series, was released on 15 July 2011 . Part 1 was originally scheduled to be released in 3D and 2D, but due to a delay in the 3D conversion process, Warner Bros. released the film only in 2D and IMAX cinemas . However, Part 2 was released in 2D and 3D cinemas as originally planned . </P>

How many harry potter books were out when the first movie came out