In Victorian England, innocent shop girl Constance falls in love with Dr. Joseph Barton, a medical researcher. They soon marry, but their intense passion is cut short. After the life-threatening birth of daughter Angelica, puritanical doctors order abstinence, condemning Constance for lascivious appetites. Sexual repression open a rift between the young couple. Frustration leads to obsession and Constance becomes more and more protective of Angelica. Then late at night, the household begins to be disrupted by what appears to be a paranormal predator. The eerie visits multiply, evoking Constance's deepest fears. With the help of her loyal maid, Nora, Constance reaches out to a spiritualist to cleanse their home of its terrors. But the arrival of charismatic Anne Montague brings even more complexities to the Barton household. Constance places her deepest trust in Anne and together they fight against a force that may be more sinisterly human that supernatural.