On the eve of presenting the first motion picture camera to the world, seven years before the Lumière brothers, its inventor, Augustin Le Prince, stepped onto a train from Dijon to Paris and vanished without a trace.Concerned that Edison’s spies were monitoring his experiments, Le Prince left his family in New York to work in relative privacy in England. In 1888, he filmed the world’s first moving picture in a garden in Leeds.Two years later, after his experiments had strai...