Part I of the book begins with two examinations of the concept itself, one focusing primarily on its secular manifestations and the other on evil in its religious context. Individuals are perhaps the primary focus of attributions of evil, and Part II looks at two particular manifestations of evil, in bullying and in mass killing, before considering the nature of evil as an immoral character trait. Part III moves beyond the individual to issues of collective evildoing, evil environments, and political evil. The final part considers responses to evil: can some evil be unforgiveable, and to what extent should we ‘enhance’ ourselves morally so as to prevent future evildoing? These essays, written by leading philosophers from around the world, including the late Claudia Card, will take the philosophical debate on moral evil in practical ethics to a new level.