Gently used, from non-smoking environment.

by Kathy Tyers.  Hard on the heels of the emperor's death, the Alliance receives word of an outpost planet beseiged by a new alien invader, a lizardlike race of creatures bent on conquest of the galaxy. Flushed with their recent victory and stunned by the revelation of their parentage, Luke and Leia travel to the edge of the Empire to join forces with their erstwhile enemies to combat an even deadlier foe. Set prior to the events of Timothy Zahn's trilogy.  First Edition.