In this new kind of entrée to contemporary discussions of free will and human agency, Garrett Pendergraft collects and illuminates 50 of the most relevant puzzles, paradoxes, and thought experiments. Assuming no familiarity with the philosophical literature on free will, each chapter describes a case, explains the questions that it raises, briefly summarizes some of the key responses to the case, and provides a list of suggested readings. Every chapter is accessible, succinct, and self-contained. The puzzles are divided into five broad categories: the threat from fatalism, the threat from determinism, practical reason, social dimensions, and moral luck. Entries cover topics such as the grandfather paradox, theological fatalism, the consequence argument, manipulation arguments, luck arguments, weakness of will, action explanation, addiction, blame and punishment, situationism in moral psychology, and Huckleberry Finn. is an effective and engaging teaching tool as well as a handy resource for anyone interested in exploring the questions that have made human agency a topic of perennial philosophical interest.