In 1837, a woman's dismembered body is found scattered across London. Sarah Gale, a seamstress and fallen woman, is sentenced to hang for her alleged role in the murder; although she professes her innocence, she is hiding darkness in her past. Edmund Fleetwood is the young, idealistic lawyer tasked with Sarah's case. The stakes for both are high: Edmund has untold gambling debts he must urgently settle, and Sarah is desperate to escape the gallows. But as the two grow closer, the barriers between confessor and penitent start to blur, and Edward can't be sure if Sarah is a victim or a murderer.