As a child growing up in Wales, Morwenna played among the spirits who made their homes in industrial ruins. But her mind found freedom in the science fiction novels that were her closest companions. When her half-mad mother tried to bend the spirits to dark ends, Mori was forced to confront her in a magical battle that left her crippled - and her twin sister dead. Fleeing to a father whom she barely knew, Mori was sent to boarding school in England - a place all but devoid of true magic. There, she tempted fate by doing magic herself, in an attempt to find a circle of like-minded friends. But her magic also drew the attention of her mother, bringing about a reckoning that could no longer be put off . . .