Looks at the causes of violent behaviour in men and at why violence is increasing. Some research pin-points paranoia as a major factor and shows that paranoia is produced in seemingly normal families. There is disagreement as to the relative importance of biological, psychological and social factors in causing violence. The programme questions whether seeking medical solutions to a problem that may be social is appropriate. Uncovers evidence of government funded research in America that is looking into levels of brain chemicals and possible ways of using drugs to alter behaviour.
