This novel is the classic of Satanism. It caused a sensation when it first appeared in 1891 because of its extraordinarily detailed and vivid descriptions of the Black Mass. These descriptions are also authentic, for J. K. Huysmans, who has been called the greatest of the French decadents, had firsthand knowledge of the satanic practices, witch cults, and the whole of the occult underworld thriving in late nineteenth-century Paris. At its center is...