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Harry Potter and the Half-Blood Prince.

David Yates, who directed this year’s summer blockbuster “Harry Potter and the Order of the Phoenix,� returns to direct “Harry Potter and the Half-Blood Prince.� David Heyman, the producer of all of the Harry Potter films, is producing the film, together with David Barron. Screenwriter Steve Kloves, who scripted the first four installments of the film franchise, is adapting the screenplay based on the book by J.K. Rowling.

Once again heading the cast, Daniel Radcliffe, Rupert Grint and Emma Watson are reprising their roles as young wizards Harry Potter, Ron Weasley and Hermione Granger, who are facing new challenges and dangers in the wake of Lord Voldemort’s return. They will be reunited with returning Harry Potter cast members, including Helena Bonham Carter, David Bradley, Robbie Coltrane, Warwick Davis, Tom Felton, Michael Gambon, Alan Rickman, Maggie Smith, Natalia Tena, Julie Walters and David Thewlis, as well as Evanna Lynch, Matthew Lewis and Bonnie Wright.