"In this conclusion to the Black City trilogy, Natalie finds herself separated from Ash, who is hiding out from the Sentry government. But they'll never give up their hope of reuniting and their quest to bring an end to the terrible reign of Purian Rose"--

Wings 2015, Speak

ISBN-13: 9780147511409

Trade paperback

Wings 2014, Putnam Publishing Group

ISBN-13: 9780399159459