The essays in this volume explore various issues pertaining to human agency, such as the relationship between free will and causal determinism, and the nature and conditions of moral responsibility. The authors build on and extend some of the very best work on this set of topics. The debates are lively and vigorous, and connections are forged between abstract philosophical theorizing and applied work in neuroscience and even criminal law. This volume should be of interest to philosophers and theorists interested in metaphysics, philosophy of mind, ethics, and the law.