Harry Potter and the Half-Blood Prince is a 2009 British-American fantasy film distributed by Warner Bros. Pictures. It is based on the novel of the same name by J. K. Rowling, the sixth instalment in the Harry Potter film series, and the sequel to Harry Potter and the Order of the Phoenix (2007). It was directed by David Yates (the director of the previous film), written by Steve Kloves and produced by David Heyman and David Barron. The story follows Harry Potter during his sixth year at Hogwarts as he becomes obsessed with a mysterious textbook, falls in love, and attempts to retrieve a memory that holds the key to Lord Voldemort's downfall.
Daniel Radcliffe, Rupert Grint, Emma Watson, Robbie Coltrane, Alan Rickman, Maggie Smith, Julie Walters, Bonnie Wright, Gary Oldman, Emma Thompson, Michael Gambon, Evanna Lynch and Helena Bonham Carter all reprise their roles from the previous movies. They are joined by Jim Broadbent as Horace Slughorn. Filming began in September 2007. The movie was released in theatres July 15, 2009, one day short of the fourth anniversary of the corresponding novel's release. The film was simultaneously released everywhere except North America, where its IMAX release was delayed for two weeks.
Half-Blood Prince opened to positive reviews along with immediate commercial success, breaking the record for the biggest single-day worldwide gross. In five days the film made $394 million, breaking the record for highest five-day worldwide gross. With a total gross of $934 million, it became the 8th-highest-grossing film of all time and the second-highest-grossing film of 2009 (behind Avatar). It is currently the 34th-highest-grossing film of all time worldwide unadjusted for inflation. It is the fifth-highest-grossing film in the franchise.
The film was nominated at the 82nd Academy Awards for Best Cinematography and the 63rd British Academy Film Awards for Best Special Visual Effects and Best Production Design. Half-Blood Prince remains one of the most positively reviewed films in the series among film critics; at the time of its release, it became the third-highest-rated Harry Potter film on review aggregators Rotten Tomatoes and Metacritic. Critics praised the film's "emotionally satisfying" story, Yates' direction, cinematography, performances, visuals, and Nicholas Hooper's musical score.