The book includes two never before translated into Russian novels by Maurice Magre (1877–1941) “The Blood of Toulouse” (1931) and “Treasure of the Albigensians” (1938), dedicated, like most of the work of this French esoteric writer , the Albigensian movement of the 12th–13th centuries. Unlike other authors, M. Magre does not simply reproduce the historical panorama of the tragic events in the south of France, but, analyzing the Gnostic and Manichaean roots of the Cathar Church of Love, reveals its deepest and most hidden layers.M. Magre believed (“Magicien et Illuminés”, 1930) that the fundamentally syncretic religious and philosophical teaching of the Cathars, which absorbed, under the influence of the Druids hiding in the Pyrenees from the persecution of Orthodox Christians, elements of the Celtic tradition, primarily in its doctrinal and theogonic aspects, a lot also borrowed from Hinduism and Buddhism, the seeds of which, apparently, were sown in Languedoc by wandering Tibetan monks - however, the writer’s friend, the German writer and researcher of the Aryan tradition Otto Rahn, close to the circles of the very competent secret society Ahnenerbe, only partly shared it opinion. Long-term connections with such esoteric organizations as the Rosicrucian Order, the Gnostic Church and the Polar Brotherhood, inspired by the cosmogonic ideas of the “world ice” of Hans Hörbiger (1860–1931), gave M. Magru access to the rarest medieval documents and chronicles, so he is very good knew that it was not gold - in any case, not only it - that the papal inquisitors were looking for, by fire and sword, eradicating in Aquitaine and Provence the Albigensian heresy, condemned by the Ecumenical Council of 1215. There is a version, supported by an apocryphal tradition, that the Cathars for a certain time were guardians of the Holy Grail...Several chapters from the work of the famous French researcher of the Albigensian movement F. Niel were used as an introductory article; the edition is also supplemented by an excerpt from the “Song of the Crusade against the Albigensians” (13th century), fragments from O. Rahn’s book “The Crusade against the Grail” (1933) and “The Cathar Breviary” (13th century), published in 1957. D. Rocher, “the last initiate of the Cathars.”