This thesis presents a comprehensive theory of evildoing as an attack on morality, grounded in objective morality. It introduces evildoing as a distinct category of immorality, arguing that it is the relationship of evil acts to the core of morality that distinguishes them from ordinary wrongdoing. Two projects are undertaken: to provide an account of morality that can ground a theory of evildoing that is both objective and capable of systematically accommodating the diverse phenomena and def...