Released in 2004 and directed by Alfonso Cuarón, Harry Potter and the Prisoner of Azkaban marked a significant stylistic shift for the franchise toward a darker, more mature tone. The film, which introduced characters like Sirius Black (Gary Oldman) and featured Michael Gambon as Dumbledore, grossed nearly $800 million worldwide while receiving critical acclaim for its visual direction. For more details, visit Wikipedia . Review: Harry Potter and the Prisoner of Azkaban | Features