Garth Nix was born in 1963 in Melbourne, Australia. A full-time writer since 2001, he has worked as a literary agent, marketing consultant, book editor, book publicist, book sales representative, bookseller, and as a part-time soldier in the Australian Army Reserve. Garth's books include the award-winning Old Kingdom fantasy novels; the six books of The Seventh Tower sequence; The Keys to the Kingdom series; and with Sean Williams, the Troubletwisters books and Spirit Animals: Blood Ties. He is also the author of Frogkisser and other novels for younger children.