Emboldened by the return of Lord Voldemort, the Death Eaters are wreaking havoc in both the Muggle and wizarding worlds. Hogwarts, once thought to be a safe haven, may no longer be safe. Harry suspects that new dangers may lie within the castle, but Dumbledore is more intent upon preparing him for the final battle that he knows is fast approaching. Harry will have to help him uncover a vital key to unlocking Voldemort's defenses, a critical piece of information known only to Horace Slughorn, Hogwarts' former Potions Professor. Dumbledore manipulates his old colleague into returning to his previous post with promises of more money, a bigger office and the chance to teach the famous Harry Potter.
Hogwarts School of Witchcraft and Wizardry (Imaginary organization) -- Fiction.
Potter, Harry (Fictitious character) -- Fiction.
Rowling, J. K. Harry Potter and the Half-Blood Prince -- Film adaptations.
Teenagers -- Conduct of life -- Fiction.
Wizards -- England -- Fiction.
Broadbent, Jim, actor.
Coltrane, Robbie, actor.
Davis, Warwick, actor.
Gambon, Michael, actor.
Grint, Rupert, 1988- actor.
Heyday Films, production company.
Heyman, David, 1961- film producer.
Radcliffe, Daniel, 1989- actor.
Rickman, Alan, actor.
Smith, Maggie, 1934- actor.
Spall, Timothy, 1957- actor.
Warner Bros. Pictures (1969- ), production company.
Warner Home Video (Firm), publisher.
Watson, Emma, 1990- actor.
Yates, David, 1963- film director.
motion picture adaptation of (work): Rowling, J. K. Harry Potter and the Half-Blood Prince.