Contrary to the notion that leaders contribute to positive behaviour within organisations, this book reflects growing interest in the ‘dark side’ of leadership: the unethical and immoral personalities that can reside in positions of power. Drawing on empirical and theoretical analysis, the author examines immorality within leadership and the underlying causes behind this behaviour. Focusing on the impact of institutional pressures, this book analyses how such behaviour is influenced by internal and external factors. By employing a theoretical framework, the author seeks to demonstrate that institutions either compel leaders to be ethical and moral, or in contrast, they actually provide legitimacy for immoral actions. An insightful and thought-provoking read, will be of interest to those studying leadership, HRM, and business ethics, as well as social psychology scholars.