Twenty years ago, Sarah, the younger sister of Tracy Crosswhite, vanished without a trace. Ever since, Tracy has wondered what really happened back then, as she does not believe that Edmund House, who was charged and convicted of her sister's murder, actually killed Sarah. Tracy wants to know the truth and seek justice. She becomes a police officer and dedicates her life as a detective in the Seattle homicide department to hunting down serious criminals. Then, twenty years after Sarah's disappearance, her remains are discovered not far from the small town of Cedar Grove, where Tracy and Sarah grew up. Tracy returns to her hometown in the northern Cascade Mountains of Washington State, determined to finally find answers to her many questions after all these years. In her search, she uncovers long-held dark secrets that change her relationships.