In today's environment, with trust in governments at an all-time low, conspiracy theories have found a new currency, and websites and social networking ensure they receive a wider and more rapid spread than ever before. But how do we separate truth from imaginationWas Princess Diana murdered, as many people think, despite all the official denialsDid NASA really go to the Moon, when anomalies in the photographic record suggest otherwiseCould 9/11 really have been set up by agencies within the USA itselfThe author opens the conspiracy casebook by examining the mindset of those who believe in conspiracies, and considers whether the dismissive attitude towards them has been fair.展开