A new leak from the set of the upcoming Narnia film has given us the first look at Emma Mackey’s The White Witch Jadis. While The Magician’s Nephew is the sixth of seven books in the Narnia series, it’s set first chronologically. This shows Jadis before she became The White Witch, many readers remember from the fantasy series. The Magician's Nephew follows two children caught up in a travel experiment between two worlds. Gerwig is writing and directing The Magician’s Nephew for the streamer, the sixth book on Lewis’ fantasy series.