The Spy Who Came In from the Cold, written by John le Carré, is a classic espionage novel that explores the world of Cold War intelligence and surveillance. The story follows Alec Leamas, a British spy who is sent on a dangerous mission to East Germany. As Leamas navigates a web of deceit and betrayal, he becomes entangled in a complex game of espionage and surveillance. This gripping book is a must-read for fans of suspense and spy thrillers.