Sebastian Cody did something horrible, something no one -- not even Sebastian himself -- can forgive. At the age of four, he accidentally shot and killed his infant sister with his father's gun. Now, ten years later, Sebastian has lived with the guilt and horror for his entire life. With his best friend away for the summer, Sebastian has only a new friend -- Aneesa -- to distract him from his darkest thoughts. But even this relationship cannot blunt...

Theodore Finch is fascinated by death, and he constantly thinks of ways he might kill himself. But each time, something good, no matter how small, stops him. Violet Markey lives for the future, counting the days until graduation, when she can escape her Indiana town and her aching grief and guilt in the wake of her sister's recent death. When Finch and Violet meet on the ledge of the bell tower at school, it's unclear who saves whom. And when they...