J. K. Rowling's third book opens with Harry Potter enduring another summer at the Dursleys', which is broken only by a news report about an escaped convict, Sirius Black, and a visit from Vernon's sister, Marge. When Marge viciously insults Harry's family, he loses his temper and inflates her, causing her to float away. Furious and distressed, Harry decides to run away. After a bad scare, when Harry believes he sees a black dog staring at him from a clump of bushes, the Knight Bus appears and takes him to the Leaky Cauldron. Minister for Magic, Cornelius Fudge is waiting for Harry at the door of the Leaky Cauldron, much to everyone's surprise. Harry is certain Fudge will expel him from Hogwarts for using under-age magic, but, surprisingly, the matter is dropped. While staying at the Leaky Cauldron, Harry hears Mr. and Mrs. Weasley arguing over whether he should or shouldn't be warned about Black, because they believe that Black escaped from prison with the intent to kill Harry.