But the Dementors are not particularly choosy about who they seek to capture or debilitate, and they seem to have an unusual attraction (and reaction) with Harry in particular. In response, the Ministry of Magic sends Dementors, a race of dreadful wraith-like creatures, to guard Hogwarts. Sirius Black, a mass murderer believed to have been a supporter of Voldemort, has escaped from the wizarding prison Azkaban, and is allegedly out to kill Harry. It was the only film in the series directed by Alfonso Cuarón, as Chris Columbus, who directed the previous two, opted not to return in favor of spending time with his children.
Harry Potter and the Prisoner of Azkaban is the third Harry Potter film, released in 2004. Weasley, why would I go looking for someone who wants to kill me? Arthur Weasley: Harry, I want you to swear to me that whatever you might hear, you won't go looking for Black.
