Georgina Castle is a successful San Francisco antiques dealer with more than a passing acquaintance with the supernatural. Her fear of again encountering an entity has altered her life and ruined her marriage. But life goes on.
One day, while hosting an estate sale for a friend, she purchases a matching pair of early 18th-century French mirrors for her collection. She knows that the owner of the mirrors disappeared without a trace many years ago, but she is curious about their earlier origins. She researches their marks and finds that the maker is Raphaël Verrier, a controversial man about whom her grandfather, a mirror expert, wrote a short book. But just as she begins to read the book, she realizes that something is not right with one of the mirrors. Not only does the image of a woman appear within the glass, it also speaks and begs for help.
And as Georgina and her friends encounter the woman's reflection and try to communicate with her and free her spirit, the story of Raphaël and his relationship with her unfolds on the pages of Georgina's grandfather's book.