Book excerpt: Sometimes, you can't hide. When the apocalypse came, nine-year-old Letitia Johnson tried. She grabbed her little sister and her classmates and locked them all in a school bathroom. For five days, they hid. The hid while their teachers were being killed, while their classmates were being killed, even while the Bronx was being evacuated. Now there's no one to help them. There's no place left to hide. It's just her, one ax, twelve kindergarteners, twelve garden stakes, and her will to live.