Тонкая работа by Sarah Waters

A young woman raised in a shabby London household of petty criminals is recruited into an elaborate con to infiltrate the home of a repressed heiress: she poses as a maid so a smooth, mysterious suitor can seduce and marry the heiress, with the aim of stealing her fortune and confining her. As the two women grow closer and an intense, forbidden intimacy develops, loyalties shift, betrayals surface and shocking reversals of identity and motive are revealed, in a gripping, gothic-tinged tale that examines class, desire and the tangled business of trust.