A great crossover book that was the beginning of a series, however I've lost it and cant find the title or anything else pertaining to the series. Premise is a caste system on a distant planet, ruled by the clergy, but the planet has become unstable. Low class worker has the markings for all caste systems on her face and becomes the new priestess or something to that effect. MEANWHILE a "union/federation" soldier in disgrace is disguised and sent in to infiltrate the planet to obtain the precious metal that is used to make.. i believe hyperdrives.. During the course of his infiltration he becomes a personal guard to the priestess and helps her break down barriers of the caste system including finding the written code of the planets earliest inhabitants which directly contradicts the edicts of the ruling clergy. Umm any thoughts??