Pinion Jay Lake. Tor, $26.99 (448p) ISBN 978-0-7653-2186-2
Political conflicts and philosophical arguments find closure at last in this splendidly baroque whirl of geomancy and Victorian clockwork. Young Paolina Barthes, the gear-minded prodigy who became a target for the empire-building ambitions of rival governments in 2009's Escapement, is on the run, heading south over the Wall that God built to divide the hemispheres and keep the Earth's gear turning through the heavens. As spies and ancient secret societies scramble to find her, Paolina struggles to learn how to control her world-shaking abilities, while her heart pulls her toward Boaz, a golemlike man of brass. Lake wields big themes—magic and religion versus science, free will, colonialism, and a bit of romance—with surprising elegance, and readers will enjoy cherishing the characters and pondering the concepts of this "clockpunk" world. (Apr.)