Their most astonishing invention, called the Firebird, allows users to jump into multiple universes—and promises to revolutionize science forever. But then Marguerite's father is murdered, and the killer—her parent's handsome, enigmatic assistant Paul— escapes into another dimension before the law can touch him.Marguerite refuses to let the man who destroyed her family go free. So she races after Paul through different universes, always leaping into another version of herself. But she also meets alternate versions of the people she knows—including Paul, whose life entangles with hers in increasingly familiar ways. Before long she begins to question Paul's guilt—as well as her own heart. And soon she discovers the truth behind her father's death is far more sinister than she expected.

    There, she cares tirelessly for her younger siblings and follows the town's strict laws. What she doesn't know is that Red Creek is a cult, controlled by a madman who calls himself a prophet.Then Agnes meets Danny, an Outsider boy, and begins to question what is and isn't a sin. Her younger brother, Ezekiel, will die without the insulin she barters for once a month, even though medicine is considered outlawed. Is she a sinner for saving him? Is her sister, Beth, a sinner for dreaming of the world beyond Red Creek?As the Prophet grows more dangerous, Agnes realizes she must escape with Ezekiel and leave everyone else, including Beth, behind. But it isn't safe Outside, either: A viral pandemic is burning through the population at a terrifying rate. As Agnes ventures forth, a mysterious connection grows between her and the Virus. But in a world where faith, miracles, and cruelty have long been indistinguishable, will Agnes be able to choose between saving her family and saving the world?

    Her mother taught her the three rules of walking: Never interfere. Never be seen. Never walk the same person’s dream more than once. Dea has never questioned her mother, not about the rules, not about the clocks or the mirrors, not about moving from place to place to be one step ahead of the unseen monsters that Dea’s mother is certain are right behind them.Then a mysterious new boy, Connor, comes to town and Dea finally starts to feel normal. As Connor breaks down the walls that she’s had up for so long, he gets closer to learning her secret. For the first time she wonders if that’s so bad. But when Dea breaks the rules, the boundary between worlds begins to deteriorate. How can she know what’s real and what’s not?

    Sixteen-year-old Tegan is just like every other girl living in 2027—she's happiest when playing the guitar, she's falling in love for the first time, and she's joining her friends to protest the wrongs of the world: environmental collapse, social discrimination, and political injustice.But on what should have been the best day of Tegan's life, she dies—and wakes up a hundred years later, locked in a government facility with no idea what happened.The future isn't all she had hoped it would be, and when appalling secrets come to light, Tegan must make a choice: Does she keep her head down and survive, or fight for a better world?