Maya is ten years old. She loves birds, dreams of becoming an author one day, and is really looking forward to winter. Finally, sledding, baking cookies, and building an igloo with her best friend and favorite neighbor Finn. When the twins Rima and Fares move into the house next door, they are quickly invited to join in. They have never built an igloo before, as they come from Egypt. This proves to be extremely useful when letters in Arabic script appear in Anna's library! The twins can translate them with ease. But what has become of this Fatima that Anna's grandmother told Jesus about? Who is this mysterious Madame Trotter mentioned in the letters? And what does the tapestry in Anna's library have to do with all of this?.