On the Scottish island of Skua, friendship develops between the lonely and mysterious Perdita and a blind girl, Janey Both possess a kind of second sight - Janey's is the ability to hear, feel and remember more than others, and Perdita's is the ominous legacy of her being a witch's daughter When Janey's brother, Tom, starts investigating a cluster of mysterious events and suspicious characters, all three become entwined in an adventure of hidden jewels, desperate criminals and dangerous detection