This extraordinary documentary film explores one of the most beautiful and mysterious cathedrals in the world, the famous Chartres Cathedral in Chartres, France. Filmed by an acclaimed BBC cameraman, it features haunting images and beautiful music, and advances challenging theories and discoveries by Professor Keith Critchlow, a leading expert in sacred architecture who has studied the mysteries of Chartres Cathedral for over forty years. Also featured is Malcolm Miller, author and longtime cathedral guide. Forty-four magnificent stained-glass windows, including three rose windows, tell the story of the world from creation to the day of judgment. The 12th Century labyrinth in the nave paving is the largest and best preserved surviving example of a medieval labyrinth in France. Who were the architects, the so called Masters of the Compasses? Where did they get the courage and confidence to build such a complex and magnificent cathedral as Chartres? This extraordinary documentary will inspire all students of architecture, religious studies and the mysteries of life.