Viola, so named by her benefactor, Hugh, Duke of Vale, has lost her memory, along with her respectability, after being found unconscious near his estate dressed in a male servant's clothes. She is a mystery unto herself, with her knowledge of books and Latin, and her skill at the pianoforte.
Thanks to the duke's kindness, Viola has found a temporary home with his nanny in a cottage on his estate, while danger lurks in the shadows and darkens her dreams. She must leave beautiful Vale Park before Hugh marries Lady Felicity Beresford, the neighbor's daughter; their marriage arranged when they were children. And before Viola and Hugh succumb to an impossible passion.
As the announcement of Hugh's engagement draws near, he tries to accept the inevitable, he must marry a woman he doesn't love. He is intrigued by Viola. Who is she and what has driven her to such an act? As the Bow Street Runners work to find the answers, Hugh grows more deeply and dangerous drawn to the mysterious lady.