Harry Potter (film series) for the third film, "Harry Potter and the Prisoner of Azkaban", claiming he was "burned out". He moved to the position of producer, while Alfonso Cuarón was approached for the role of director. He was initially nervous about directing the instalment since he had not read any of the books or seen the films. After reading the series, he changed his mind and signed on to direct since he had immediately connected to the story. Because Cuarón decided not to direct the fourth instalment, "Harry Potter and the Goblet of Fire", a new director had to be selected. Mike Newell
Harry Potter and the Goblet of Fire (film) for any of the films." For the second task, involving the film's underwater scenes, the film crew designed and built a blue screen tank holding "about half a million gallons of water." As for the final task, which took place in the maze, hedge walls ranging from 20 to 40 feet tall were constructed and enhanced with computer-generated imagery. John Williams, who had scored the first three "Harry Potter" films, could not return for the fourth instalment due to a busy 2005 schedule. Patrick Doyle, who had worked with Newell in "Into the West" and "Donnie Brasco", replaced him as