Harry Potter and the Prisoner of Azkaban is the third film in the Harry Potter series, directed by Alfonso Cuarón. Daniel Radcliffe returns as Harry Potter, who learns that a dangerous wizard named Sirius Black has escaped from the wizarding prison of Azkaban and is believed to be after him. As Harry delves deeper into the mystery, he discovers the truth about his parents' death and the connection to Sirius Black. With its darker and more mature tone, Harry Potter and the Prisoner of Azkaban showcased Radcliffe's growth as an actor and the series' evolution into a more complex and emotionally resonant story.