In this thrilling World War I espionage novel, Richard Hannay is called back to action to track down a dangerous German spy ring. As Hannay embarks on a perilous mission across England, Scotland, and Europe, he navigates both physical and psychological battles, all while confronting themes of patriotism, sacrifice, and personal integrity. The third novel in the Hannay series, Mr Standfast masterfully blends adventure with wartime intrigue.