In 1920 a student of alchemy was studying under Fulcanelli, an alchemist master whose real name, to this day, is unknown. Fulcanelli handed his pupil a manuscript, charged him with the task of publishing it -- and disappeared. Only his masterpiece Le Mystere des Cathedrales remains. This book speaks of the phonetic cabala, of the process and transformation within the alchemical tradition, of the fact, wholly unsuspected by the profane, that the Gothic cathedrals have, for 700 years, offered mankind instruction in the technique of its own evolution. About one thing there is no possible doubt -- Fulcanelli KNEW. In 1920 a student of alchemy studied under Fulcanelli (an alchemical master whose real name is unknown). He handed his pupil a manuscript, charged him with the task of publishing it, and disappeared. Cabala, process and transformation within the alchemical traditions, and much more.