Swedish author David Lagercrantz, who took over the Millennium crime series from the late Stieg Larsson, made the remarkable announcement that the fifth book will be written in a new style: like Raymond Chandler or even Lagercrantz's own ghosted biography of footballer Zlatan Ibrahimovic.Millennium is a collection of best-selling and award-winning crime novels intended to be a series of 10 by Larsson, who died suddenly in 2004, leaving only three books: The Girl with the Dragon Tattoo, The Girl Who Played with Fire and The Girl Who Kicked the Hornets' Nest.A fourth book, The Girl in the Spider's Web, was based on Larsson's characters, especially the female protagonist Lisbeth Salander, and was commissioned from author and crime journalist Lagercrantz by publishers Norstedts.Lagercrantz, 53, said The Girl in the Spider's Web was stylistically different because it included long passages about interstellar black holes.The new novel, which is out early next year and which will be published in 56 countries, will be far less technical and will be written in the straight-talking, terse style popularised by American noir writer Chandler. ''It's so much harder to write hard-boiled fiction than I thought," said Lagercrantz.The first three books, which also feature investigative journalist Mikael Blomkvist, sold more than 80million copies worldwide and inspired several film versions.But the decision to continue the series after Larsson's death upset some.His former long-term partner, Eva Gabrielsson, who was excluded from his inheritance because they were not married, criticised the project, reportedly saying she saw its publication as a form of ''grave robbing."The Girl in the Spider's Web sold 3.5million copies worldwide.The sixth book is scheduled to be published in 2019. ..