This volume contains a set of state-of-the-art essays by younger philosophers on various topics in the philosophy of action. Some of the essays are about the metaphysics of action and agency; some consider the nature of autonomy and free agency; some explore conceptual and normative issues, some draw on data from psychology and psychopathology. But what all of them have in common is that they address some problem related to our existence as human agents. The range of topics covered is this collection is broad. This is intentional. Rather than focus on one narrow topic in the philosophy of action, this volume brings together papers that, taken together, introduce readers to some key debates in contemporary philosophy of action. Readers new to the field should come away from the volume with a good sense of the state-of-the-art with respect to current thinking about human action and agency. For their part, established researchers in the field will find the essays to be original contributions that substantially advance many debates about action and agency.