Although they comprise only a small percentage of employees and senior managers, corporate psychopaths have a massive and significantly negative influence on organizational outcomes. Psychopaths who work within organizations cause increased levels of bullying and conflict, rises in organizational withdrawal behaviour, rises in organizational constraints, lower job satisfaction and lower levels of corporate social responsibility. Organizations and societies that want to survive and prosper will have to weed out corporate psychopaths , or closely monitor their activities. Psychopaths are little understood outside of their criminal manifestation. However, as the recent global financial crisis has highlighted, the conscience-free behaviour of a small group of corporate managers can, if left unchecked, potentially bring down the entire western system of business. This book investigates who these people are, why they do what they do and what the consequences of their presence are in organizations.