Legal disputes over the Harry Potter series October 2007, Warner Bros. and Rowling sued Michigan-based publishing firm RDR Books to block the publication of a 400-page book version of the Harry Potter Lexicon, an online reference guide to her work. Rowling, who previously had a good relationship with Lexicon owner Steve Vander Ark, reiterated on her website that she plans to write a "Harry Potter" encyclopedia, and that the publication of a similar book before her own would hurt the proceeds of the official encyclopedia, which she plans to give to charity. A judge later barred publication of the book in any form until the case was
J. K. Rowling Christopher Little, moving to a new agency founded by one of his staff, Neil Blair. On 23 February 2012, his agency, the Blair Partnership, announced on its website that Rowling was set to publish a new book targeted at adults. In a press release, Rowling said that her new book would be quite different from Harry Potter. In April 2012, Little, Brown and Company announced that the book was titled "The Casual Vacancy" and would be released on 27 September 2012. Rowling gave several interviews and made appearances to promote "The Casual Vacancy", including at the London Southbank Centre, the