Spy novels are a genre of fiction that focuses on espionage, intelligence operations, and the lives of spies. These stories often involve complex plots filled with intrigue, betrayal, and high-stakes missions. Characters typically include secret agents, double agents, and government officials, all navigating a world of secrecy and danger. The genre gained popularity during the Cold War, with authors like John le Carré and Ian Fleming creating iconic characters such as George Smiley and James Bond. Spy novels often explore themes of loyalty, morality, and the psychological toll of living a life shrouded in deception.