A single mother with no family, Grace works full-time at a London flower shop to support herself and Sylvie. Overwhelmed by her inability to help her daughter, she turns to Adam Winters, a dashing psychology professor with some unusual theories about what might be troubling the child. Together, they travel to seemingly idyllic Coldharbour, hoping to understand Sylvie’s mysterious connection to the place. Impossible as it may seem, Grace has to accept that her daughter may be remembering a past life. And not only that: the danger bedeviling Sylvie from her past life is still very much a threat to her in this one.