About “Directorium inquisitorum”
The Directorium Inquisitorum is Nicholas Eymerich's most prominent and enduring work, written in Latin and consisting of approximately 800 pages, composed as early as 1376. It reworked an earlier treatise on sorcery Eymerich had written, perhaps as early as 1359, drawing on magic texts he had confiscated from accused sorcerers. It can also be considered an assessment of a century and a half of official Inquisition in the "Albigensian" country. (Summary adapted from Wikipedia, CC BY-SA 4.0.)