Best friends for eleven years, Holly, Savitri, and Holly's twin, Corey, are a unit, freerunning through Chicago as if they were superheroes until a random act of violence takes Corey's life and, as they tell in their separate voices, Holly seeks the murderer and revenge while Sav feels left behind. Incorporates sections of comic-style art.

"Originally published in hardcover in the United States by Alfred A. Knopf, an imprint of Random House Children's Books, a division of Random House LLC, a Penguin Random House Company, New York, in 2013."