JENNIFER LYNN BARNES has written several acclaimed young adult novels, including the four books in the Naturals series, The Naturals, Killer Instinct, All In and Bad Blood. She has advanced degrees in psychology, psychiatry, and cognitive science. She received her PhD from Yale University and is now a professor of psychology. You can find her online at www.jenniferlynnbarnes.com, or follow her on Twitter @jenlynnbarnes.