Composer
Director
Producer
Screenwriter
Main Role
- Lee Min Ho Main Role
- Kim Go Eun Main Role
- Woo Do Hwan Main Role
- Lee Jung JinYi Rim | Lee Sung JaeMain Role
- Kim Kyung Nam Main Role
- Jung Eun Chae Main Role
Support Role
- Park Won SangPark Moon Shik [Team leader]Support Role
- Kim Young OkNoh Ok Nam [Head court lady who raises Lee Gon]Support Role
- Jeon Bae SooJung Do In [Jung Tae Eul's father / Taekwondo instructor]Support Role
- Seo Jung YeonSong Jung HyeSupport Role
- Kim Yong JiMyung Na Ri [Building owner] | Myung Seung Ah [Employee on duty at the Royal Press Office]Support Role
- Hwang Young HeeMin Hwa Yun [Shin Jae's mother] / Park Sook Jin / Min Son Young [Palace staff]Support Role
- Heo Dong WonShim Hyung Sa [Homicide detective]Support Role
- Jeon Moo SongYi Jong In [Member of the royal family]Support Role
- Ahn Shi HaKim Hee Joo [National Forensic Service autopsy doctor] | Kim Joo Hyun [Central Forensic Medical Center autopsy doctor] (Ep. 13)Support Role
- Kang Hong SukJang Michael [Homicide detective] | Jang Mi Reuk [Royal guard trainee] (Ep.13)Support Role
- Lee Hae YoungYoo Gyung Moo [Yi Rim's subordinate]Support Role
- Lee Hong NaeSuk Ho Pil [Second captain of the Royal Guards]Support Role
- Park So JinJo Ha In [Psychiatrist]Support Role
- Baek Hyun JooSecretary Mo [Lee Gon's general secretary]Support Role
- Song Sang EunKyung Ran [Tae Eul's fellow police officer]Support Role
- Kang Gi DoongMr. Kim [Seo Ryung's assistant]Support Role
- Kim Jung Young[Seo Ryung's mother]Support Role
- Kim Hyun WooYoon Hwan SooSupport Role
- Choi Woo SungKim Gi WonSupport Role
- Hwang Se OnPark In Young [Royal guard]Support Role
- Park Ji YeonPark Ji Young | [Pregnant woman] (Ep. 5, 8, 12-13, 15)Support Role
- Lee Hwang Ui[Seo Ryung's advisor]Support Role
Guest Role
- Joo Ye RimMin Ji (Ep. 1)Guest Role
- Jung Shi YoolJo Young [Young] (Ep. 1)Guest Role
- Baek Seung Chul[Security guard] (Ep. 1)Guest Role
- Heo Jae HoKim Bok Man (Ep. 1-2)Guest Role
- Go Eun MinSong Jung Hye [Young] (Ep. 1-2, 16)Guest Role
- Kim Ki Moo[Gang Boss] (Ep. 1-2, 6)Guest Role
- Kim WookChoi Nam Jin (Ep. 1, 4) | [School bully] (Ep. 6, 16)Guest Role
- Jung Hyun JoonLee Gon [Young] (Ep. 1, 4, 9, 16) | Lee Ji Hun (Ep. 1)Guest Role
- Kwon YoolKing Yi Ho [Lee Gon's father] (Ep. 1, 4, 14)Guest Role
- Ryu Sung RokPark Gyu Bong [Tailor] (Ep. 1, 4, 6, 12)Guest Role
- Son Kyung WonSeung Heon [Yi Jong In's eldest son] (Ep. 1, 11, 15)Guest Role
- Yoon Joo ManYoo Gyung Moo [Young] (Ep. 1, 11, 16)Guest Role
- Yoon Sung WooMyung Ho (Ep. 2)Guest Role
- Kim Jong TaeLee Sang Do (Ep. 2) | [Stable worker] (Ep. 7, 9, 11-12)Guest Role
- Lee Hye RaPark Soo Yun (Ep. 2)Guest Role
- Jung Ye NaJo Eun Bi (Ep. 2, 6, 10, 13, 15)Guest Role
- Seol Woo HyungJo Eun Woo (Ep. 2, 6, 10, 13, 15)Guest Role
- Cha Sung Je[Birthday party boy] (Ep. 2)Guest Role
- Seo Jang Hyun[Birthday party boy] (Ep. 2)Guest Role
- Choi Moo InKang Jun Hyuk [Detective] (Ep. 2-10)Guest Role
- Yang Jo AhMs. Baek [Myung Ho's mother] (Ep. 2, 12, 14-15)Guest Role
- Hong Ye JiYoon Soon Kyung [Officer] (Ep. 3)Guest Role
- Lee Ho Chul[Gang boss] (Ep. 3, 8)Guest Role
- Kim Bo Min[Yo-Yo kid] (Ep. 3-4, 8-11, 14, 16)Guest Role
- Yang Hyun Min[Gambling boss] (Ep. 3-4, 9)Guest Role
- Kim Sung Gon[Detective] (Ep. 4)Guest Role
- Song Hoon[Photographer] (Ep. 4)Guest Role
- Ahn Jung Ho[Arrested criminal] (Ep. 4)Guest Role
- Jeon Noh MinChoi Gi Taek (Ep. 4, 6)Guest Role
- Jang Hae Min[Staff] (Ep. 4, 7-8, 11)Guest Role
- Lee Yoon Jae[Government official] (Ep. 4, 6)Guest Role
- Shin Hyun JongLee Jung Hoon [Horse doctor] (Ep. 5, 7, 9)Guest Role
- Ha Seung Youn[Train booking clerk] (Ep. 5)Guest Role
- Jo Jae Yoon[Arcade worker] (Ep. 5, 7)Guest Role
- Park Yong[Military official] (Ep. 6)Guest Role
- Garrison Michael Farquharson-Keener[BDC News Anchor] (Ep. 6)Guest Role
- Sung Chan Ho[Government official] (Ep. 6)Guest Role
- Lee Yoon Sang[Government official] (Ep. 6)Guest Role
- Moon Hak Jin[Man with Lee Jong In] (Ep. 6)Guest Role
- Yang Ji Soo[Jo Young's uncle] (Ep. 6-7, 10)Guest Role
- Jung Ha DamYu Jung Hwa (Ep. 7)Guest Role
- Kim Kwi SeonPark Mun Haeng (Ep. 7)Guest Role
- Moon Dong HyukPark Jung Gu (Ep. 7-8)Guest Role
- Bae Sung IlKim Gi Hwan [Vendor] (Ep. 1) / [Restaurant owner] (Ep. 7-9, 11)Guest Role
- Ha Seung RiJang Yun Ji (Ep. 7-11, 16) / [Palace staff] (Ep. 1, 4, 7)Guest Role
- Seo Dong GabPark Byung Woo (Ep. 7) | [Republic of Korea traveler] (Ep. 7, 12)Guest Role
- Moon Woo JinKang Shin Jae | Kang Hyun Min [Young] (Ep. 7-16)Guest Role
- Ahn Seok Hyun[Ice cream shop boy] (Ep. 8)Guest Role
- Tae In HoChoe Min Heon [Chairman] (Ep. 9-10)Guest Role
- Bae Bo Ram[Reporter] (Ep. 10)Guest Role
- Lee Ji Hyun[Eun Sub's mother] (Ep. 10)Guest Role
- Min Eung Shik[Government official] (Ep. 10, 12)Guest Role
- Kim Seung Tae[Government official] (Ep. 10, 12)Guest Role
- Kang Moon Kyung[Government official] (Ep. 10, 12)Guest Role
- Park Jung Eon[Restaurant manager] (Ep. 12)Guest Role
- Lee Se Rang[Masseuse] (Ep. 13)Guest Role
- Kim Woo JinLee Seung Heon [Young] (Ep. 14)Guest Role
- Kim Dong Gyun[Shin Jae's father] (Ep. 14)Guest Role
- Lee Ye WonLuna [Young] (Ep. 16)Guest Role
- Woo Ji Hyun[Rookie] (Ep. 16)Guest Role
- Yoon Jung Hyuk[Yo-Yo adult] (Ep. 16)Guest Role
- Jang Ha Ran[Hyo Jin's mother] (Ep. 16)Guest Role
- Seo Woo Jin[Prime Minister's son] (Ep. 16)Guest Role
- Kim Shi WooJeong Tae Eul [Young]Guest Role
- Shin Soo YunGoo Seo Ryung [Young]Guest Role
- Yoo In Hyuk[Royal guard]Guest Role
- Jung Se Hyun[Part-time worker]Guest Role
- Kim Min Song[Lee Rim's assistant #2]Guest Role
- Jin Geun Ho[Jo Young | Jo Eun Sub double]Guest Role
- Park Hoon[Jo Young | Jo Eun Sub's father]Guest Role
- Lee Chae Kyung[Great Democratic Party Member of National Assembly]Guest Role
- Park Ung SunMonk (Ep 2)Guest Role
- Lee Jung Woo[Rowing player]Guest Role
- Kang Joo Hee Guest Role
- Kim Joo Eun Guest Role
- Kim Gui SeonPark Mun Haeng (Ep. 7)Guest Role
- Kim Sang Il[Big Data Lab manager] (Ep. 12)Guest Role
- Noreen Joyce GuerraMoon Seung Ih [Member of the Press]Guest Role
- Jung Soo JiKim Soo JinGuest Role
- Park Gi Seon[Painter] (Ep. 6)Guest Role
- Choi Gyo Shik[Jeweler] (Ep. 2)Guest Role
- Ko Dong Ok[Gangster] (Ep. 1-2, 5)Guest Role
- Lee Jae Woo[Cemetery employee] (Ep. 11)Guest Role
- Jung Nan Hee Guest Role
- Kim Su Ol[Bakery part time worker]Guest Role
Unknown
- Kim Byung Chul Unknown
- Park Ji Won Unknown
- Lee Seung Joon Unknown
- Lee Jeong Chan Unknown
- Park Jun Hyuk Unknown
- Gong Teyu Unknown
- Park Young Bin Unknown
- Chris Chan Unknown
- Park Ki DukLieutenant Park (Ep. 3-4)Unknown
- Chun Jung Ha[Yangsun Care Center manager] (Ep. 8, 13)Unknown
- Na Seok Min[Royal guard] (Ep. 14)Unknown
- Kim Tae Hwan Unknown
- Han Seung Do Unknown
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