Garth Nix is a New York Times bestselling novelist and has been a full-time writer since 2001 but has also worked as a literary agent, marketing consultant, book editor, book publicist, book sales representative, bookseller, and part-time soldier in the Australian Army Reserve.

Garth's many books include the Old Kingdom fantasy series, beginning with Sabriel and continuing to Goldenhand; the sci-fi novels Shade's Children and A Confusion of Princes; the Regency romantasy Newt's Emerald; and novels for children including The Ragwitch, the Seventh Tower series, the Keys to the Kingdom series, and Frogkisser! Garth has written numerous short stories, some of which are collected in Across the Wall and To Hold the Bridge. He has also cowritten several children's book series with Sean Williams, including TroubleTwisters and Have Sword, Will Travel.

More than six million copies of his books have been sold around the world and his work has been translated into forty-two languages.