Preston, 1888: as the century draws to a close, the prostitute murders in London have made young Lydia Ketchs trade a political issue. Lydia, the tough but optimistic daughter of a former workhouse inmate, has spent a year working in the introduction house of Kathleen Tanner, a job that has given her an income few others could match. When Lydia meets Henry Shadwell, a Preston, 1888: as the century draws to a close, the prostitute murders in London have made young Lydia Ketchs trade a political issue. Lydia, the tough but optimistic daughter of a former workhouse inmate, has spent a year working in the introduction house of Kathleen Tanner, a job that has given her an income few others could match. When Lydia meets Henry Shadwell, a young surgeon with a passionate interest in biology, the two develop an instant - and non-professional - bond. And Henry soon enlists Lydias help in his underground sidelines; first as a model for pornographic photography; then as an assistant in procuring corpses for medical experimentation. With the dangers of her own line of work becoming clearer by the day, and her newfound delight in her own sexuality burgeoning, Lydia becomes disillusioned with her life as a prostitute. And it soon become clear that her trade - and Henrys - are even more dangerous than either had imagined.