Harper Lee explores with exuberant humour the irrationality of adult attitudes to race and class in the Deep South of the thirties. The conscience of a town steeped in prejudice, violence and hypocrisy is pricked by the stamina of one man's struggle for justice. But the weight of history will only tolerate so much. "To Kill a Mockingbird" is a coming-of-age story, an anti-racist novel, a historical drama of the Great Depression and a sublime example of the Southern writing tradition.