In a world struggling back from the brink of apocalypse, life is harsh. But for Elspeth Gordie, born with enhanced mental abilities, it is also dangerous. Survival is only by secrecy and so she determines never to use her forbidden powers. But it is as if they have their own imperative and she is brought to the attention of the totalitarian Council that rules the Land.

Banished to the remote mountain institution of Obernewtyn, she must throw off her cloak of concealment and pit herself against those that would resurrect the terrible forces of the apocalypse. Only then will she learn most truly who and what she is . . .

Elspeth is determined to uncover the plot and so, accompanied only by her cat, Maruman, embarks on a terrible adventure full of danger, the conclusion to which promises not just uncertainty about her safety but also that of many around her.