Following on from the earlier edited collection, Loss of Control and Diminished Responsibility, this book is the first volume in the Substantive Issues in Criminal Law series. It serves as a leading point of reference in the area relating to participation in crime and identifies the need for a consistent approach to the doctrinal and theoretical underpinnings of complicity liability. This book is a valuable reference resource for those in the criminal justice community in the UK and abroad and is useful for academics, the judiciary and policy-makers.