Some of you stumble at telling the slightest un-truths. Others get away with outrageous lies for years. There are many reasons why we lie – and sometimes we do it for the good of others. A panel of professional human lie detectors reveals the discoveries they’ve made about the inner workings of the deceitful mind. Chris Taylor, writer, performer and broadcaster, Matthew Condon, crime and corruption reporter, Kate McClymont, investigative journalist at The Sydney Morning Herald and Dr Calum Smith, forensic psychiatrist.