Espionage thrillers are a subgenre of fiction that focuses on the activities of spies and intelligence agencies. These stories often involve complex plots filled with deception, betrayal, and high-stakes missions. Characters typically include secret agents, government officials, and double agents, all navigating a world of secrecy and danger. The narratives often explore themes of loyalty, morality, and the impact of espionage on global politics. Popular examples of this genre include works featuring iconic characters like James Bond and Jason Bourne, which highlight the thrilling and often perilous nature of undercover operations and international intrigue.