In recent decades, a handful of Swedish writers have established themselves internationally, including the detective novelist Henning Mankell and the writer of spy fiction Jan Guillou. The Swedish writer to have made the most lasting impression on world literature is the children's book writer Astrid Lindgren, and her books about Pippi Longstocking, Emil, and others. In 2008, the second best-selling fiction author in the world was Stieg Larsson, whose ''Millennium'' series of crime novels is being published posthumously to critical acclaim. Larsson drew heavily on the work of Lindgren by basing his central character, Lisbeth Salander, on Longstocking.