Transmediation-the telling of a single story across multiple media platforms-is a relatively new phenomenon. While there has been adaptation-books to films, for example-for more than a century, modern technology and media consumption have has expanded the scope of transmediating practices. Nowhere are these more evident than within the Harry Potter universe, where a coherent world and narrative are iterated across, books, films, video games, fan fiction, art, music and more. Curated by a leading Harry Potter scholar, this collection of new essays explores the range of Potter texts across a variety of media.