1826, London is in a frenzy. Crowds gather at the gates of the Old Bailey to watch as Frannie Langton, maid to Mr and Mrs Benham, goes on trial for their murder. The testimonies against her are damning - slave, whore, seductress. But they are not the whole truth. But through her fevered confessions, one burning question haunts Frannie: could she have murdered the only person she ever loved?