Everyone knows Olive Martin, the huge and menacing woman who was found five years ago with the carved-up bodies of her mother and younger sister. Everyone knows how she pleaded guilty to murder at her trial. And everyone knows not to anger the Sculptress even now that she is safely locked in prison for a minimum of twenty-five years.When Rosalind Leigh accepts a commission to write a book about Olive, she finds herself wondering what lies behind all of these facts that everyone knows. When Roz first visits her in prison, she finds that Olive is not quite what she expected. And if - as Roz is repeatedly warned - Olive lies about almost everything, then why did she confess so readily to two hideous murders? The deeper she is drawn into the shadowy world of the Sculptress, the more firmly she is convinced that Olive is hiding something - perhaps even her innocence. But whom could Olive be protecting - and why?