13 titles, most popular first
Kim Hyun-jun and Jin Sa-woo, best friends as close as brothers, serve together in an elite army special forces unit until they are recruited into the NSS, a secret South Korean black-ops agency. Both fall for Choi Seung-hee, the agent who quietly scouted them, as they begin a dangerous new life in espionage.
Go Ae-rin is a woman who has just lost her husband. Together with her neighbor Kim Bon, a former NIS agent, she begins to dig into the truth about how her husband was tangled up in a vast conspiracy.
Han Gil-ro spent his childhood watching James Bond films and finally lands his dream job as a rookie agent at the National Intelligence Service. Kim Seo-won is a clumsy but determined fellow trainee. After training side by side, the two must keep their real identities hidden from one another, even as romance grows between them.
Set in the same world as Iris, the story starts when South Korea's president, hoping to lead in nuclear energy, sends black-ops agent Dr. Kwon Yong-kwan to bring home a scientist defecting from North Korea. Three years later, Kwon heads NTS, a new counter-terror task force guarding that technology from foreign enemies, joined by its new top agent, Lee Jung-woo.
After seeing his mother murdered by the gangster Mao, Lee Soo-hyun is taken in by NIS agent Kang Jung-ho's family and grows up to become an agent alongside Jung-ho's son Min-ki. When a mission stirs up his childhood trauma and his hunger for revenge gets him fired, he is offered a chance to go undercover inside Mao's gang.
Longtime star Yeo Woon-gwang suddenly needs protection and hires Kim Seol-woo, a talented and mysterious bodyguard. Seol-woo is secretly a black ops agent for the intelligence service, using the job as cover for his own mission, while also growing close to the star's manager, Cha Do-ha.
Mun-ju is a skilled diplomat who once served as UN ambassador, and San-ho is an international special agent whose nationality is a mystery. After Mun-ju's husband is killed, the two join forces to uncover the truth behind a deadly attack that could shake the security of the Korean Peninsula.
Kwon Do-hoon secretly works as an NIS black-ops agent while pretending to be an ordinary office worker. His wife, Kang Yoo-ra, is sweet but fierce, and her biggest dream is to build the perfect family, unaware of the double life her husband is leading.
Han Jeong-hyeon has spent thirty years hiding that he is a National Intelligence Service agent, living as a family man who runs a bicycle repair shop. When his wife Choi Yeon-soo, a human rights lawyer, becomes the first director of the Corruption Investigation Office, the couple are drawn into a fight against a powerful force at the very top.
Lee Soon-ae, a recently widowed traffic officer, pulls over a charming stranger named Han Yoo-il for a routine violation, not knowing he is an international spy on a secret mission. When she forgets to give back his high-tech spy pen, she is drawn into the shadowy world of espionage.
Kang Ah-reum designs wedding dresses and has two marriages behind her, and both husbands hide who they really are: her ex, Jun Ji-hoon, is an undercover Interpol agent, and her current husband, Derek Hyun, is an industrial spy. When a close friend is murdered, Ah-reum turns to Ji-hoon and his team to find out the truth.
In 1932 Gyeongseong, Lee Ga-kyung is the city's most skilled pickpocket and con artist, saving up to leave Joseon and start over abroad. For the independence movement, she agrees to spend 100 days undercover as an interpreter at the Japanese Government-General, where she meets Kim Tae-woong, an elite interpreter also known as Sato Hideo.
Former secret agent Baek Shi-yoon hides his past and runs a bar called Neighborhood, where he grows close to the regulars and their troubles. When he meets Choi Chan-gyu, a temp worker who dreams of joining the police, Shi-yoon begins training him like an agent, and the two team up to take on wrongdoers.
