Based on the critically acclaimed novel by Sarah Waters, AFFINITY is the story of a 19th-century aristocrat, Margaret Prior, who journeys to a female prison to mentor its hopeless inmates. There, she meets and falls for Selina Dawes--a convict who is able to communicate with the dead--powers that put her in jail when a seance went horribly wrong. But what really happened...' There are many more mysteries in store for viewers in this subtle but steamy tale of deceit and betrayal.