Margaret Mahy, New Zealand’s most celebrated children’s and young adult writer is the author of over 120 titles, including the very popular novel, The Changeover. For those who have not read the book, The Changeover is a supernatural thriller about a troubled teenager who must become a witch to save her little brother from an ancient spirit. It is full of humour, fantasy, adventure, science and the supernatural. The movie features newcomer Erana James as Laura Chant, the novel&r...