‘For a very long time, the days went by, each just like the day before, then I began to think, and everything changed’ Deep underground, thirty-nine women live imprisoned in a cage. Watched over by guards, the women have no memory of how they got there, no notion of time, and only vague recollection of their lives before. As the burn of electric light merges day into night and numberless years pass, a young girl - the fortieth prisoner - sits alone and outcast in the corner. Soon she will show herself to be the key to the others' escape and survival in the strange world that awaits them above ground.

Tarisai has always longed for the warmth of a family. She was raised in isolation by a mysterious, often absent mother known only as The Lady. The Lady sends her to the capital of the global empire of Aritsar to compete with other children to be chosen as one of the Crown Prince’s Council of 11. If she’s picked, she’ll be joined with the other Council members through the Ray, a bond deeper than blood. That closeness is irresistible to Tarisai, who has always wanted to belong somewhere. But The Lady has other ideas, including a magical wish that Tarisai is compelled to obey: Kill the Crown Prince once she gains his trust. Tarisai won’t stand by and become someone’s pawn—but is she strong enough to choose a different path for herself?