Discover a world of inquisitors, great kings, Crusader knights, conquests, and revolts. A Brief History of the Cathars narrates the events related to the Cathar heresy and the crusade organized by the papacy to fight it. It combines two views that have not appeared so far in the same work: the French perspective, and the Catalonian-Aragonese point of view. The result of this merge is a work that breaks all topics that have existed so far with regard to the work published on the Cathars: books of excellent French medievalists, too specialized and cumbersome for the general readership; works by Spanish authors of regionalist character that state wrong conclusions too lightly; and works of occult and esoteric character, where historical accuracy is conspicuous in its absence. In short, every lover of medieval or religious history, without being necessarily an expert on the subject, will be delighted with this easy reading, rigorous, and entertaining book on the Cathars.