Both Tolkien and C.S. Lewis are literary superstars, known around the world as the creators of Middle-earth and Narnia. But few of their readers and fans know about the important and complex friendship between Tolkien and his fellow Oxford academic C.S. Lewis. Without the persistent encouragement of his friend, Tolkien would never have completed The Lord of the Rings. This great tale, along with the connected matter of The Silmarillion, would have...