Judith is a writer and illustrator.
Her books include maze and puzzle books, picture books and novels, and have been published in more than 20 languages. She has written 12 books and illustrated about 80. Her most recent picture book was Bogtrotter, written by Margaret Wild.
Her illustrated novel Withering-by-Sea won a number of awards, and the sequel, Wormwood Mire, was published in November 2016.
She teaches writing at RMIT and has a cat the size of a walrus.