Deep in the woods of northern England, somewhere between a dilapidated estate and an abandoned Victorian asylum, fifteen-year-old Jane Standen lived through a nightmare. She was babysitting a sweet young girl named Lily, and in one fleeting moment, lost her. The little girl was never found, leaving her family and Jane devastated. Twenty years later, Jane is an archivist at a small London museum that is about to close for lack of funding. As a final research project--an endeavor inspired in part by her painful past--Jane surveys the archives for information related to another missing person: a woman who disappeared over one hundred years ago in the same woods where Lily was lost. As Jane pieces moments in history together, a portrait of a fascinating group of people starts to unfurl. Inexplicably tied to the mysterious disappearance of long ago, Jane finds tender details of their lives at the country estate and in the asylum that are linked to her own heartbroken world, and their story from all those years ago may now help Jane find a way to move on.