By sixth grade, Miranda and her best friend, Sal, know how to navigate their New York City neighbourhood. They know what’s safe and whom to avoid. But then things start going wrong and Sal starts to shut Miranda out of his life. A key to Miranda’s apartment is stolen. And then Miranda finds a mysterious note scrawled on a tiny slip of paper:
I am coming to save your friend’s life, and my own.
I must ask two favors. First, you must write me a letter.
The notes keep coming and Miranda slowly realizes that whoever is leaving them knows all about her, including things that have not even happened yet. Each message brings her closer to believing that only she can prevent a tragic death. Until the final note makes her think she’s too late.