But up close the locked doors, military guards, and biohazard suits tell a different story. In truth, it is a clandestine research facility where thousands of replicas, or human models, are born, raised, and observed.But when a surprise attack is launched on Haven, two of its young experimental subjects—Lyra, or 24, and the boy known only as 72—manage to escape. As they make their way through a new and menacing environment, they meet a stranger named Gemma, who has embarked on a perilous quest of her own. And as Lyra tries to understand Haven’s purpose, she uncovers earth-shattering secrets that will change the lives of both girls.GemmaGemma has been in and out of hospitals her whole life. A sickly child, she has grown into a lonely adolescent whose life is circumscribed by home, school, and her best friend, April.But after she is nearly abducted by a stranger claiming to know her, Gemma starts to investigate her family’s past and discovers her father’s mysterious connection to the secretive Haven research facility. Hungry for answers, she travels to Florida, only to stumble upon two human models, or replicas, 24 and 72—and a completely new set of questions. As Gemma tries to unravel the mysteries of Haven, she learns terrible truths about herself and her family that will threaten to destroy everything she loves.Two girls, two stories, one novel.While the stories of Gemma and Lyra mirror each other, each contains revelations critically important to the other story. Their narratives can be read separately or in alternating chapters.

    Now the sun is just a sliver of light on the horizon. The weather is turning cold and the shadows are growing long.Because sunset triggers the tide to roll out hundreds of miles, the islanders are frantically preparing to sail south, where they will wait out the long Night.Marin and her twin brother, Kana, help their anxious parents ready the house for departure. Locks must be taken off doors. Furniture must be arranged. Tables must be set. The rituals are puzzling—bizarre, even—but none of the adults in town will discuss why it has to be done this way.Just as the ships are about to sail, a teenage boy goes missing—the twins’ friend Line. Marin and Kana are the only ones who know the truth about where Line’s gone, and the only way to rescue him is by doing it themselves. But Night is falling. Their island is changing.And it may already be too late.