His best-known role is perhaps that of Albus Dumbledore, Hogwarts's headmaster in the third installment of J. K. Rowling's franchise, Harry Potter and the Prisoner of Azkaban, taking over the role after the death of Richard Harris. (Harris had also played Maigret on television four years before Gambon took that role. ) Gambon reprised the role of Dumbledore in Harry Potter and the Goblet of Fire, which was released in November 2005 in the United Kingdom and the United States. He returned to the role again in the fifth film, 2007's Harry Potter and the Order of the Phoenix, and the sixth film, Harry Potter and the Half-Blood Prince. He appeared in the seventh film; Harry Potter and the Deathly Hallows Parts I and II, released in two parts in 2010 and 2011. Gambon told an interviewer that, when playing Dumbledore, he does not "have to play anyone really. I just stick on a beard and play me, so it's no great feat. I never ease into a role—every part I play is just a variant of my own personality. I'm not really a character actor at all. . . '"