From the New York Times bestselling author of The Secret Book of Flora Lea and Becoming Mrs. Lewis comes a fascinating look into the bond between siblings and the life-changing magic of stories. 1950: Margaret Devonshire (Megs) is a seventeen-year-old student of mathematics and physics at Oxford University. When her beloved eight-year-old brother asks Megs if Narnia is real, logical Megs tells him it's just a book for children,...