At seventeen, Lain has already aced the Institute's elite training programme for Mindwalkers, therapists who use direct neural links to erase traumatic memories. A prodigy and the daughter of a renowned scientist -- whose death left her alone in the world -- Lain is driven by the need to save others.

When troubled classmate Steven asks her to wipe a horrific childhood experience, Lain's superiors warn her to stay away. Steven's scars are too deep, they say, the risk too great. Yet as she...