Isilia Greygrove looks exactly like her twin sister Iseult... only she is actually a changeling who was placed in the cradle of a human baby by the Seelie Court fairies. Celie always knew that she was different from others. Her own unpredictable magic forced her to flee with Isolde from her hometown, erasing all memories of herself. And because of an unsuccessful robbery, the sisters had to go in search of a treasure, the secret of which is rooted deep in the history of people and fairies. Very soon Isilia and Isolde will understand that the secrets of fairies are much more valuable than gold. But can the changeling harness her power to protect her sister and herself?