Garth Nix is an Australian author known for his contributions to the fantasy genre, particularly for young adults and children. He gained fame with his Old Kingdom series, which includes the popular novel Sabriel. Nix's storytelling often features strong characters and intricate world-building, appealing to readers of all ages. In addition to the Old Kingdom series, Garth Nix has written several standalone novels and series, such as the Keys to the Kingdom and The Seventh Tower. His works have received numerous awards and nominations, establishing him as a prominent figure in contemporary fantasy literature.