''The Perfect Scent ''is the thrilling inside story of the global perfume industry, told through two creators working on two very different scents. The first is commissioned by the French luxury brand Hermes, and developed by a perfumer named Jean-Claude Ellena, who begins his search for the scent on the banks of the Nile. The second is a celebrity fragrance, developed in New York by movie star Sarah Jessica Parker and a team of perfumers from a global conglomerate. Chalder Burr, the ''New York Times'''s perfume critic, spent a year behind the scenes watching both creators at work. His thrilling narrative follows each scent from the initial concept to the worldwide launch. ''The Perfect Scent'' is the story of two daring creators, two very different scents, and a billion-dollar industry that runs on the invisible magic of perfume.