Obsidian by Jennifer L. Armentrout follows seventeen-year-old Katy Swartz as she moves to West Virginia and meets her gorgeous, arrogant neighbor, Daemon Black. Katy soon discovers that Daemon and his sister, Dee, are Luxen—aliens with extraordinary powers—and her sudden proximity to them leaves her marked by his energy, thrusting her into an intergalactic conflict. Book condition: In very good condition.