A. E. W. Mason's 'The Turnstile' is a captivating novel set during World War I, exploring themes of duty, honor, and sacrifice against the backdrop of turbulent times. The story follows the lives of three men, each facing their own moral dilemmas. Mason's writing style is rich in detail and emotion, immersing readers in the harsh realities of war and the complexities of human nature. The novel is a poignant reflection on the impact of war on individuals and society, making it a timeless work of literature that continues to resonate with readers today. 'The Turnstile' is a masterful blend of suspense, drama, and social commentary, making it a must-read for fans of historical fiction and war literature alike.