It is vital for healthcare leaders to have a clear sense of which leadership ideas and practices are rooted in sound theory and convincing evidence, and which are more speculative. This book provides a coherent set of six lenses through which to scrutinise the leadership literature relevant to healthcare - leadership concepts, characteristics, contexts, challenges, capabilities and consequences. It offers a view of leadership beyond the traditional focus on the individual, and argues instead that leadership has to be understood and developed as a complex set of practices by many people within specific organisational and inter-organisational contexts and cultures.