Garth Nix is the internationally bestselling author of over 30 books for readers of all ages, including the New York Times bestselling Old Kingdom series, the Keys to the Kingdom series, the Seventh Tower series, Frogkisser!, Angel Mage, and The Left-Handed Booksellers of London. He released two titles in 2023: The Sinister Booksellers of Bath, an instant New York Times and IndieBound bestseller, and his highly-anticipated adult debut, the story collection Sir Hereward and Mister Fitz: Stories of the Witch Knight and the Puppet Sorcerer. With Sean Williams, he is the co-author of the Troubletwisters series, the Have Sword, Will Travel series, and Spirit Animals: Blood Ties. More than six million copies of his books have been sold around the world and his work has been translated into 40 languages. He has received countless awards and nominations in the US and Australia for his novels and short fiction. He lives in Sydney, Australia, with his wife and two children.