"Dark Mirror" by Barton Gellman is a captivating non-fiction book that delves into the revelations of Edward Snowden and the far-reaching implications of modern surveillance. Gellman, a three-time Pulitzer Prize winner, utilizes his unique access to Snowden and his extensive reporting to provide a deep analysis of the American government's surveillance practices. The book highlights not only the technical aspects of surveillance but also the ethical questions that arise from these practices. Gellman succeeds in making complex topics understandable while also showcasing the drama and real consequences of surveillance. "Dark Mirror" is both informative and alarming, prompting critical reflection on privacy and state control.