Set in the Kingdom of France during the dark and tumultuous thirteenth century, this gripping historical thriller explores the rise of the Inquisition and the flames of religious fanaticism. At the heart of the intrigue lies a sacred and dangerous knowledge, protected by a master Talmudist. Melding meticulous theological research with a breathless narrative, Éliette Abécassis delivers a powerful reflection on tolerance, transmission, and the eternal fight against obscurantism.