We think of ourselves as calm, peaceful, law-abiding creatures. But could we ever be driven to kill another person? Horizon discovers the terrifying violence that lies within us all. From the role brain chemicals like dopamine and serotonin play in controlling our aggression to social conditioning discover what can make us aggressive. Find out why sleepless nights mean you are more likely to lose your temper. Uncover the surprising link between brain damage and domestic violence. And discover if are our morals and actions are dictated by those of the group we feel we belong to, or society in general? We consider murder unacceptable, but if we changed our codes of conduct and moral values, could we all be capable of killing? Are humans really more violent than we'd like to think? Given the right circumstances, could every one of us be driven to murder?
