 For 60 years the British and American governments have been secretly investigating unexplained UFO sightings from Rendlesham to Roswell. In 1947 the US Air Force even issued a press release announcing that they had got possession of a flying saucer. But this extraordinary outburst of openness didn t last long. The secretive and suspicious nature of the military soon took over. Now Danny Wallace sets out to find just what we haven t been told. His journey of exploration takes him from the spooky forests of the Suffolk countryside to Roswell in New Mexico - the epicentre of conspiracy theory.