Marcus du Sautoy, Professor of Mathematics at the University of Oxford, escorts you through the most important of all intellectual disciplines. Mathematics is the Empress of the Sciences. Without her, there would be no physics, nor chemistry, nor cosmology. Any field of study depending on statistics, geometry, or any kind of calculation would simply cease to be. And then, there are the practical applications: without maths there's no architecture. No commerce. No accurate maps, or time-keeping: therefore no navigation, nor aviation, nor astronomy. She is all-powerful: and she rules ruthlessly. Imperious and unyielding, mathematics brooks no dissent and tolerates no error. In an age of uncertainty, mathematics is the only discipline that generates knowledge that's immutably, incontestably, and eternally true. In this landmark series of films for BBC Four.