How Juries Work offers a thorough and critical examination of the modern jury, challenging deeply rooted assumptions about how juries function and the extent to which tradition-bound practices serve the goals of justice. By drawing on psychological theory, empirical research, and comparative legal analysis, Helm exposes the many limitations inherent in current jury procedures, ranging from cognitive biases and memory errors at the individual level to systemic issues of group dynamics and representativeness. Whether approached by scholars, practitioners, or policymakers, the book serves as both a diagnostic tool and a springboard for future innovation, offering a wealth of insights and practical recommendations that warrant serious consideration and further study.