Laura Ruby is the Michael L. Printz Award-winning author of many books for adults, teens, and children, including Thirteen Doorways, Wolves Behind Them All and Bone Gap , both National Book Award finalists; the ALA Best Fiction for Young Adults selection York: The Shadow Cipher and its sequels; the Edgar Award nominee Lily's Ghosts ; and the Book Sense Pick Good Girls . She is on the faculty of Hamline University's MFA in writing for children and young adults program and lives in the Chicago area. You can visit her online at lauraruby.com.