Alphabet of Dreams

Separated from family and hunted by a rival royal faction, Mitra and her younger brother, Babak, are living as beggars in the caves outside the ancient Persian city of Rhagae. When she discovers that Babak can dream other people's dreams, she begins to sell his gift for food and money. Word of his strange ability spreads, and soon Mitra and Babak find themselves in the hands of a priest, Melchior, one of the most powerful Magi in the land. Author's note.