Composer
Director
Screenwriter
Main Role
- So Ji SubKim Bon / Terius [NIS black agent] / Wang Jung NamMain Role
- Jung In Sun Main Role
- Son Ho Jun Main Role
- Im Se MiYoo Ji Yun [NIS agent]Main Role
Support Role
- Kim Geon UCha Joon Soo [Ae Rin's son]Support Role
- Ok Ye RinCha Joon Hee [Ae Rin's daughter]Support Role
- Kim Yeo JinShim Eun Ha [KIS]Support Role
- Jung Shi AhBong Sun Mi [KIS]Support Role
- Kang Ki YoungKim Sang Ryul [KIS]Support Role
- Hwang Ji AhJo Seo Hyun [Eun Ha's daughter]Support Role
- Lee Joo WonJo Seung Hyun [Eun Ha's son]Support Role
- Kim Dan WooHan Yoo Ra [Sun Mi's daughter]Support Role
- Park Si WonKim Seung Gi [Sang Ryul's son]Support Role
- Kim Sung JooRa Do Woo [NIS genius hacker]Support Role
- Uhm Hyo SubShim Woo Chul [Dir. NIS]Support Role
- Seo Yi SookKwon Young Shil / Kim Tae Hee [NIS Deputy Dir.]Support Role
- Jasper ChoSteven Kim / "K" / "The Magician"Support Role
- Lee Hyun KulPark Soo Il [Yong Tae's driver]Support Role
- Kim Byung OkYoon Choon SangSupport Role
- Jo Yi HyunMin JoonSupport Role
- Shin Soo Jung[Min Joon's mother]Support Role
- Choi Jung Hyun[NIS agent- Kwon’s team]Support Role
- Lee Seung Woo[NIS agent- Kwon’s team]Support Role
- Choi Tae HwanKim Ji Hoon [Kwon’s Aide]Support Role
- Jeon Soo KyungAhn Da Jung [Chief Butler]Support Role
- Shin Sung Hwan[NIS agent- Kwon’s team]Support Role
- Park Beom Gyoo[NIS agent- Kwon’s team]Support Role
- Kim Ian[NIS agent- Kwon’s team]Support Role
Guest Role
- Song Hoon[Director Moon’s funeral consultant]Guest Role
- Nam Gyu RiChoi Yun Kyung [North Korean defector]Guest Role
- Park Soon ChunLee Ji Sook [Ae Rin’s mother]Guest Role
- Kim Myung SooMoon Sung Soo [Head of National Security]Guest Role
- Yang Dong GeunCha Jung Il [Ae Rin's husband]Guest Role
- Lee Joon Hyuk[Shaman] (Ep. 11)Guest Role
- Park Seung Tae[Woman on elevator]Guest Role
- Kim Ji Eun[Yong Tae's secretary] (Ep.1)Guest Role
- Park Ji HyunClara ChoiGuest Role
- Jo Sun MookMinister Yang Seung HakGuest Role
- Im Byung KiDirector Jun In TaekGuest Role
- Park Geon RakPark Do Hoon [Team leader]Guest Role
- Yoon Sang HyunDoctor Yoo [Ji Yun's brother]Guest Role
- Kim Tae Wan[Director Jun’s aide]Guest Role
- Lee Doo Suk[Dir. Moon’s Aide]Guest Role
- Son San[Mommy Cop member]Guest Role
- Kim Jin Ok[Mommy Cop member]Guest Role
- Jung Young Joo[Babysitter on cellphone] (Ep. 4)Guest Role
- Lee Young Eun[Eun Ha's daughter]Guest Role
- Lee Ja Ryoung[MicroBioMed doctor]Guest Role
- Kim Min Soo[Sun Mi’s husband]Guest Role
- Jung Kyu Soo[Jung Il’s boss]Guest Role
- Lee Ha YulJung In Soo [Conman]Guest Role
- Ok Joo Ri[Neighbour of Ae Rin's parents] (Ep. 24)Guest Role
- Kim Jong Ho[Realtor] (Ep.24)Guest Role
- Mirosław Zbrojewicz[Following Spy]Guest Role
- Ha Do Gwon[Private Investigator]Guest Role
- Jun Eun Mi[Saw fight on street]Guest Role
- Dong Yoon Seok[Apartment CCTV official]Guest Role
- Choi Gyo Shik Guest Role
- Lee A Ra Guest Role
- Lee Seung Yong Guest Role
- Shin Hee Gook Guest Role
- Park Jae Won Guest Role
- Na Seok Min[Tactical Agent]Guest Role
- Kim Chae Hyun[Young mother]Guest Role
- Kim Mi Hye[Interviewee for Yoon Choon Sang's home staff]Guest Role
- Lee Min Jae Guest Role
- Han Soo Ho[Secret Agent, Terrorist]Guest Role
- Oh Kyu Taek[man fighting in Police Station]Guest Role
- Myung Seok Geun[Man fighting at the police station]Guest Role
- Park Ung Sun Guest Role
- Park Jeong Min[Doctor]Guest Role
Unknown
- Jin Shi Won Unknown
- Jeong Ye Dam Unknown
- Kim Hye Ran Unknown
Bit part
- Andreas FronkMercenaryBit part
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