Lu’s debut is a stunner. Weaving the strands of SF dystopia, police procedural, and coming-of-age—with touches of superhero and wild frontier traditions—she fashions a narrative in which the action is kinetic and the emotional development is beautifully paced. June, a prodigy from the elite class of the disintegrating Republic, is being groomed for a military career when her brother, a captain, is murdered. June is quickly drafted into the team tracking his accused killer, a spectral and maddeningly persistent outlaw known as Day. June’s life has been shaped by intellect, and to be driven by an emotion as ungovernable as grief makes her vulnerable in painful, dangerous ways. Day has known grief all of his life, but is no more immune to it than June is. The chase unfolds against a plague-infested Los Angeles of Gotham-like grit that Lu conjures with every nuance of smell, sound, and sight. First in a series, this story is utterly satisfying in its own right and raises hopes high for the sequels to come. Ages 12–up. (Nov.)