Walden Media has revealed that the movie Narnia 4 will actually be based on "The Magician's Nephew" and not on "The Silver Chair". The Magician's Nephew is actually a prequel to the first opus of the Chronicles of Narnia ("The Lion, the Witch and the Wardrobe"). Here's a plot summary of Narnia The Magician's Nephew:
"The Chronicles of Narnia The Magician's Nephew is about the creation of the magical land of Narnia and how evil entered into the newly formed land. The tale also follows Professor Kirke from the 'Wardrobe' as a young boy (Digory) and his introduction to Narnia through a magical ring given to him by his evil Uncle Andrew, a magician."
co-founder and president of Walden Media
Do you think The Magician's Nephew will be a better story than the Silver Chair for Narnia 4?