The aim of this book is to teach you techniques, which will enable you to detect the lies among your interlocutors. You will develop a greater vigilance and will be able to detect and counter-attack a person who tries to lie to you. No need to learn by heart all gestures, techniques or reflexes, you have just to understand the functioning of psychological and physics reactions that occurs among liars. Around this basic mechanics, we will study together some frightening techniques which help you to face peacefully difficult situations. Welcome in the little book of lies detection