Rowan Sterling should be worrying about normal teenage things like attending college and whether her best friend Lucas is maybe more than a friend. Instead, she's having terrifying visions of blood and violence. As the premonitions increase in number and intensity, Rowan finds herself drugged, kidnapped, and sent to a mysterious facility called Rosewood. It isn't long before Rowan discovers Rosewood isn't a boarding school or an asylum: it's a training center for teens with special abilities who are known as Harrows. Harrows can view the actions of would-be murderers before they commit crimes, and the scientists at Rosewood believe it is their duty to use the Harrows' powers to make the world a safer place. Rowan is immediately drawn to Rosewood's mission; after all, she lost her mother to a random act of violence two years prior. Empowered by the skills she's acquired and ready to change the world, Rowan returns home, but when she reunites with Lucas, she has a vision of him shooting a man in cold blood. Now Rowan is questioning everything she learned at Rosewood-she refuses to believe Lucas is capable of murder-and sets out to protect him from the Harrows.