As Harry begins his sixth year at Hogwarts, he discovers an old book marked as 'Property of the Half-Blood Prince', and begins to learn more about Lord Voldemort's dark past.
Oscar Diggs, a small-time circus illusionist and con-artist, is whisked from Kansas to the Land of Oz where the inhabitants assume he's the great wizard of prophecy, there to save Oz from the clutches of evil.
Sally and Gillian Owens, born into a magical family, have mostly avoided witchcraft themselves. But when Gillian's vicious boyfriend, Jimmy Angelov, dies unexpectedly, the Owens sisters give themselves a crash course in hard magic. With policeman Gary Hallet growing suspicious, the girls struggle to resurrect Angelov -- and unwittingly inject his corpse with an evil spirit that threatens to end their family line.
Harry starts his fourth year at Hogwarts, competes in the treacherous Triwizard Tournament and faces the evil Lord Voldemort. Ron and Hermione help Harry manage the pressure – but Voldemort lurks, awaiting his chance to destroy Harry and all that he stands for.
Returning for his fifth year of study at Hogwarts, Harry is stunned to find that his warnings about the return of Lord Voldemort have been ignored. Left with no choice, Harry takes matters into his own hands, training a small group of students – dubbed 'Dumbledore's Army' – to defend themselves against the dark arts.
Harry, Ron and Hermione continue their quest to vanquish the evil Voldemort once and for all. Just as things begin to look hopeless for the young wizards, Harry discovers a trio of magical objects that endow him with powers to rival Voldemort's formidable skills.
Harry Potter has lived under the stairs at his aunt and uncle's house his whole life. But on his 11th birthday, he learns he's a powerful wizard -- with a place waiting for him at the Hogwarts School of Witchcraft and Wizardry. As he learns to harness his newfound powers with the help of the school's kindly headmaster, Harry uncovers the truth about his parents' deaths -- and about the villain who's to blame.
Ignoring threats to his life, Harry returns to Hogwarts to investigate – aided by Ron and Hermione – a mysterious series of attacks.