Composer
Director
Screenwriter
Main Role
- Ji Chang Wook Main Role
- Im Yoon Ah Main Role
- Song Yoon Ah Main Role
- Jo Sung Ha Main Role
Support Role
- Kim Gab Soo Support Role
- Lee Jung JinChoi Sung Won [JB Group CEO / Yoo Jin's brother]Support Role
- Shin Dong MiKim Dong Mi [Yoo Jin's chief secretary]Support Role
- Lee Ye EunJang Mi Ran / "J4" [An Na's bodyguard]Support Role
- Lee Jae WooLee Sung Kyu / "K1" [An Na's bodyguard]Support Role
- Jeon Bae SooJoo Cheol Ho [Yoo Jin's bodyguard team chief]Support Role
- Son Tae YoungUhm Hye Rin [An Na's mother]Support Role
- Song Kyung ChulSong Young Choon [Master]Support Role
- Park Soon Chun[Sung Won's mother]Support Role
- Lee Chul Min[Kwan Soo's secretary]Support Role
- Go In BeomKook Chae WanSupport Role
- Lee Yoo JooGo An Na [Young]Support Role
- Yeom Hye Ran[An Na's housemaid]Support Role
Guest Role
- Joo Sae Byuk[Se Joon's mistress] (Ep. 1)Guest Role
- Yoo Seung MokCongressman Kim (Ep. 3, 12)Guest Role
- Jo Hee Bong[Policeman] (Ep. 2-3)Guest Role
- Carson AllenRaniya [Korean translator] (Ep. 3)Guest Role
- Sung Dong Il[Detective] (Ep. 3)Guest Role
- Tae Won Seok[Detective] (Ep. 3)Guest Role
- Joo Seok Tae[Man who opens the bag of the deceased's will at the funeral] (Ep. 5)Guest Role
- Kim Bo Mi[Girl who took a Selfie] (Ep. 6 -7)Guest Role
- Lee Han Wi[Blue House chief of staff] (Ep. 7, 10)Guest Role
- Cho Byeong Kyu[Cafe part-timer] (Ep. 8)Guest Role
- Jo Dong Hyuk[JSS Special Division leader] (Ep. 8)Guest Role
- Jung Dong Geun[Prosecutor] (Ep. 8, 14)Guest Role
- Jeon Soo Yeon[Nurse] (Ep. 13)Guest Role
- Lee Se Rang[Hair salon customer] (Ep. 13)Guest Role
- Kim Mi Hye[Anchorwoman] (Ep. 14)Guest Role
- Bae Eun Woo[Flight attendant] (Ep. 15)Guest Role
- Shin Dong HoonKim Ki JaGuest Role
- Jung Ji YoungNo Ji YunGuest Role
- Yoon Jong HwaKim Suk HanGuest Role
- Kim Kyung RyongLee Kyung JinGuest Role
- Jo Jae RyongSecretary SungGuest Role
- Joey AlbrightScott [Soldier]Guest Role
- Choi Seung HoonKim Je Ha [Young]Guest Role
- Lee Soon WonSeo [JSS bodyguard team leader]Guest Role
- Lee Won Jin[FD]Guest Role
- Kim Hyun[Guide]Guest Role
- Han Hye Ji[Reporter]Guest Role
- Park Geon Rak[Inspector]Guest Role
- Lee Seung Joon[Examiner]Guest Role
- Lee Yoo Soo[Detective]Guest Role
- Jung Se Hyung[Detective]Guest Role
- Yoo In Hyuk[Bodyguard]Guest Role
- Yoon Joo Bin[Bodyguard]Guest Role
- Lee Su Ryeon[Bodyguard]Guest Role
- Kwon Soo Hyun[Bodyguard]Guest Role
- Oh Sang Hoon[Task force leader]Guest Role
- Kim Ik Tae[Fruit ranch farmer]Guest Role
- Ji Tae Yang[Scarred policeman]Guest Role
- Yoon Sung Woo[Young Je Ha's friend]Guest Role
- Ham Jin Sung[Kwan Soo's bodyguard]Guest Role
- Son Dong Hwa[Reserve forces member]Guest Role
- So Hee Jung[JSS chief medical doctor]Guest Role
- Sung Ian Guest Role
- Lee Se Mi Guest Role
- Park Geon Guest Role
- Jang Hae Song Guest Role
- Choi Won Yong Guest Role
Bit part
- Anupam Tripathi Bit part
Unknown
- Chu Yeon Gyu Unknown
- Min Sang Woo Unknown
- Hong Ru Hyeon Unknown
- Park Gun Unknown
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