'Gabrielle has no memory. No family. No past. All Gabrielle has is a voice in her head that tells her she is not like anyone else. It tells her not to delve into her past. It tells her she is on a quest.
'Still haunted by the mysterious Voice, and the knowledge of her strange gifts, Gabrielle begins the year at a new school. She befriends Michael and his younger brother, Jack. But something is very wrong with Jack.
'Can Gabrielle help Michael discover the truth behind his strange - and possibly deadly - little brother?' (From the publisher's website.)