This thrilling true story follows Oleg Gordievsky, a KGB officer who became a double agent for Britain during the Cold War. Risking everything, he secretly passed Soviet secrets to MI6 for over a decade, helping prevent nuclear war. His daring escape from Moscow under KGB suspicion reads like the most tense spy novel, but it's all real history. The book explores the personal cost of betrayal and the shadowy world where loyalty to country and ideology collide.