22 November, 1963: Dallas, Texas. US President John F Kennedy is assassinated as his motorcade passes through the city's streets. The assassin is soon captured, and revealed to be disaffected Communist symapthizer Lee Harvey Oswald. Did Oswald have help, and if so, who from The Bilderberg Group: simply a group of international financiers concerned to promote democracy throughout the world, or is there a more sinister power at work And what really happened to Princess Diana's Mercedes in the Paris underpass Conspiracy theories arise out of the belief that mysterious forces are conspiring behind the scenes to control and manipulate an unsuspecting public. In times gone by, the prime movers behind conspiracies would have been seen as Satanists, witches, anarchists modern conspiracy theorists, however, are more usually keen to blame the CIA. The fact that the CIA has been proven beyond doubt to have been involved in conspiracies simply strengthens their hand. Conspiracy looks at a range of the most interesting theories of this nature, from the risibly far-fetched, such as the belief that the world is run by the lizard people, to the only-too-true and tragic such as the overthrow and murder of Chilean President Salvador Allende.