Steve Van Aperen is Australia's foremost expert with the polygraph machine - what many of us call 'a lie detector'. But a polygraph can't really tell if someone is lying, only whether or not they are feeling anxious or afraid, which is how most people feel when they are lying. After years of experience and training, Van Aperen can tell just by looking and listening whether or not someone is feeling that fear - and probably telling a lie - whether they are attached to the polygraph or not. Andy Shea draws on Van Aperen's expertise and uses examples from history and the present day to show how you can learn to tell whether someone is trying to pull the wool over your eyes - at work, at home, or anywhere.