A New York Times Bestseller, A 2010 Newbery Medal Winner -- By sixth grade, Miranda and her best friend, Sal, know how to navigate their New York City neighborhood. They know where it's safe to go and they know whom to avoid. But things start to unravel. Sal gets punched by a new kid and shuts Miranda out of his life. Miranda's hidden apartment key is stolen. And then Miranda finds a mysterious note: I am coming to save your friend's life, and my own. I must ask two favors. First, you must write me a letter.