Humanity's Commonwealth won its war with the alien Shrehari Empire seven decades ago. Starships engaged in commerce have replaced the battlecruisers, and much of that commerce flows through free ports established on what was once a disputed frontier. Yet even long after the armistice, the relationship between humans and an unfathomable, easily offended species remains tense. When someone assassinates a Shrehari trade emissary on Aquilonia Station,...