Tate Adkins, celebrity horticulturist and plant hunter, on his way to developing the Christmas rose that would rock the gardening world, fell to his death on a plant hunting expedition. Two years later, still grieving, his lover, garden designer and writer Mim Fitz, is struggling at work under a toxic editor. At home, her sleep is haunted by a terrifying dream. In an effort to regain her life, she attends a horticultural writers' conference. There, in addition to information about the beautiful Christmas rose, she discovers a web of coincidences that unveil a murderous psychopath.