Insider

Director

• 
  Min Yeon Hong

Screenwriter

• 
  Moon Man Se

Main Role

• 
  Kang Ha Neul

  Kim Yo Han

  Main Role
• 
  Lee Yoo Young

  Oh Soo Yeon

  Main Role

Support Role

• 
  Heo Sung Tae

  Yoon Byung Wook

  Support Role
• 
  Kim Sang Ho

  Mok Jin Hyung [Prosecutor]

  Support Role
• 
  Moon Sung Keun

  Do Won Bong [Seongju Prison inmate]

  Support Role
• 
  Kang Young Seok

  Jang Seon Oh [Seongju Prison inmate]

  Support Role
• 
  Heo Dong Won

  Yang Jun ['Skin Nation' chairman]

  Support Role
• 
  Choi Dae Hoon

  No Seung Hwan / Nam Dae Moon [Seongju Prison inmate]

  Support Role
• 
  Park Sung Geun

  Hong Sang Wook [Prosecutor]

  Support Role
• 
  Kang Shin Hyo

  Hong Jae Sun [Prosecutor / Sang Wook's son]

  Support Role
• 
  Jeong Man Sik

  Yang Hwa ['Goldman Casino's CEO / Bukyeongpa's boss / Yang Jun's older brother]

  Support Role
• 
  Kim Si Eun

  Park Ro Sa [Police]

  Support Role
• 
  Sung Ji Ru

  Ha Sang Su [Seongju Prison warden]

  Support Role
• 
  Han Jae Young

  Jo Hae Do [Bukyeongpa gang]

  Support Role
• 
  Kim Ji Na

  Jin Soo Min [Director / 'Skin Nation' accountant]

  Support Role
• 
  Oh Tae Kyung

  Woo Sang Ki [Goldman Casino's accountant / Min Ho's father]

  Support Role
• 
  Choi Moo Sung

  Song Doo Cheol [Bukyeongpa gang]

  Support Role
• 
  Cha Yeob

  Kim Gil Sang [Bukyeongpa gang]

  Support Role
• 
  Yoon Byung Hee

  Kim Woo Sang [Bukyeongpa gang]

  Support Role
• 
  Han Kyu Won

  Eom Ik Soo [Bukyeongpa gang]

  Support Role
• 
  Jo Hee Bong

  Ryu Tae Hoon [Seongju Prison inmate]

  Support Role
• 
  Lee Ha Yul

  Kim Woo Jae [Prosecutor]

  Support Role
• 
  Kim Min Seung

  Woo Min Ho [Sang Ki's son]

  Support Role
• 
  Yoo Ha Bok

  Kim Jung Gyu [Prosecutor]

  Support Role
• 
  Kim Byung Chul

  [Sinseondong elder]

  Support Role
• 
  Seo Myung Chan

  [Sinseondong elder]

  Support Role
• 
  Lee Yang Hee

  [Sinseondong elder]

  Support Role
• 
  Jeong Hwee Wook

  Kwon Dae Il [Police]

  Support Role
• 
  Moon Jong Won

  Kim Sung Bum [Seongju Prison staff]

  Support Role
• 
  Park Joong Geun

  Park [Seongju Prison guard]

  Support Role
• 
  Kim Kyu Baek

  [Seongju Prison inmate #1369]

  Support Role
• 
  Hwang Dae Woong

  [Seongju Prison inmate #8934]

  Support Role
• 
  Kim Wang Do

  [Seongju Prison inmate #7721]

  Support Role
• 
  Kang Hak Soo

  [Prosecutor's Office Admin Support staff] (Ep. 13)

  Support Role

Guest Role

• 
  Song Jae Hee

  Kim Tae Soo [Yo Han's father] (Ep. 1)

  Guest Role
• 
  Bae Yong Geun

  [Detective] (Ep. 1)

  Guest Role
• 
  Choi Seung Il

  [Prosecutor] (Ep. 1)

  Guest Role
• 
  Kim Jung Soo

  [Prosecutor] (Ep. 1)

  Guest Role
• 
  Jung Woong In

  [Chaebol man] (Ep. 1)

  Guest Role
• 
  Lee Chae Kyung

  [Young Gook's wife] (Ep. 1)

  Guest Role
• 
  Yoo Jae Myung

  Noh Young Gook [Prosecutor] (Ep. 1-2)

  Guest Role
• 
  Ye Soo Jung

  Shin Dal Soo [Yo Han's grandma] (Ep. 1-2)

  Guest Role
• 
  Han Sung Soo

  Lee Tae Gwang [Seongju Prison inmate] (Ep. 4)

  Guest Role
• 
  Lee Young Suk

  [Monk] (Ep. 2)

  Guest Role
• 
  Kim In Woo

  [Yakuza boss] (Ep. 2)

  Guest Role
• 
  Richard Kim

  [University dean] (Ep. 2)

  Guest Role
• 
  Lee Moo Nyoung

  [Seongju Prison guard] (Ep. 2)

  Guest Role
• 
  Seon Yul U

  [Seongju Prison inmate] (Ep. 2)

  Guest Role
• 
  Min Dae Shik

  [Priest] (Ep. 4, 7)

  Guest Role
• 
  Park So Yoon

  [Motel worker] (Ep. 5)

  Guest Role
• 
  Kim Han Sang

  [Camera store owner] (Ep. 5)

  Guest Role
• 
  Kim Joon Hyung

  [Seongju Prison guard] (Ep. 5)

  Guest Role
• 
  Moon Ho Jin

  O Jong Hun (Ep. 6)

  Guest Role
• 
  Lee Shi Woo

  Jang Seon Oh [Teen] (Ep. 6, 12)

  Guest Role
• 
  Kim Jae Il

  [Poker player] (Ep. 6)

  Guest Role
• 
  Lee Jung Hyun

  [Poker player] (Ep. 6)

  Guest Role
• 
  Jang Jae Kwon

  [Attorney] (Ep. 7)

  Guest Role
• 
  Hong Seo Joon

  Gu Bon Cheol [Lawyer] (Ep. 7-8)

  Guest Role
• 
  Min Eung Shik

  [Introducer] (Ep. 7)

  Guest Role
• 
  Son Kyung Won

  Shim Jae Chul [Seongju Prison warden] (Ep. 8)

  Guest Role
• 
  Park Kyu Bin

  [Min Ho's friend] (Ep. 7)

  Guest Role
• 
  Lee Kun Goo

  [Jae Sun's subordinate] (Ep. 7)

  Guest Role
• 
  Kim Jin Goo

  [Team leader] (Ep. 7, 16)

  Guest Role
• 
  Kim Jong Ho

  [Corrections administrator] (Ep. 8)

  Guest Role
• 
  Han Bo Reum

  Annie Stevens [Macau Triads] (Ep. 9)

  Guest Role
• 
  Kang Jung Goo

  [Soo Yeon's associate] (Ep. 8, 10)

  Guest Role
• 
  Uhm Chae Young

  Oh Soo Yeon [Young] (Ep. 9)

  Guest Role
• 
  Jung Chung Gu

  Kim Jin Yong [Attorney] (Ep. 9)

  Guest Role
• 
  Kim Won Seok

  [Attorney] (Ep. 9)

  Guest Role
• 
  Song Kyung Eui

  [Prosecutor] (Ep. 9)

  Guest Role
• 
  Kim Do Shin

  [Prosecutor] (Ep. 9)

  Guest Role
• 
  Fan Bing Bing

  Ms. Lam (Ep. 14, 16)

  Guest Role
• 
  Lee Dong Gyu

  [Anchorman] (Ep. 9-10)

  Guest Role
• 
  Choi Moo In

  [Team leader] (Ep. 9-10)

  Guest Role
• 
  Son Seung Taek

  Ryu Byung Sung (Ep. 10)

  Guest Role
• 
  No Kyung

  [Security staff] (Ep. 10)

  Guest Role
• 
  Lee Jae In

  [Director of Finance] (Ep. 10)

  Guest Role
• 
  Kim Kwi Seon

  Chairman Suh (Ep. 10-11)

  Guest Role
• 
  Sung Ki Yoon

  Cha Seok Hong [CEO] (Ep. 10-11)

  Guest Role
• 
  Na Ho Won

  [VIP poker player] (Ep. 10-11)

  Guest Role
• 
  Kwon Hyuk Soo

  [Video conf. man] (Ep. 11)

  Guest Role
• 
  Oh Kyung Min

  [Chairman Yang Joon's subordinate] (Ep. 11)

  Guest Role
• 
  Jung Ji Hoon

  Jang Seon Oh [Young] (Ep. 12)

  Guest Role
• 
  Lee Sae Byul

  [Nurse] (Ep. 12)

  Guest Role
• 
  Kim Sung Gang

  [Money launderer] (Ep. 12)

  Guest Role
• 
  Kwak Gi Hun

  [Lawyer Gu's subordinate] (Ep. 12)

  Guest Role
• 
  Kim Ha Eon

  Kim Yo Han [Young]

  Guest Role
• 
  Baek Suk Kwang

  [Seongju Prison doctor]

  Guest Role
• 
  Lee Dong Won

  [Seongju Prison inmate #1321]

  Guest Role
• 
  Lee Kwang Ik

  [Seongju Prison inmate #3497]

  Guest Role
• 
  Lim Seung Beom

  [Detective] (Ep. 16)

  Guest Role
• 
  Lee Ye Ju

  No Ji Yeon (Ep. 16)

  Guest Role
• 
  Choi Young Min

  [Investigator] (Ep. 14)

  Guest Role
• 
  Yoo Yong

  [Reporter] (Ep. 16)

  Guest Role
• 
  Park Boo Gun

  [Prosecutor] (Ep. 15)

  Guest Role
• 
  Park Byung Wook

  [Doctor] (Ep. 13)

  Guest Role
• 
  So Yun Ho

  [Prosecutor] (Ep. 14)

  Guest Role
• 
  Hong Eun Jeong

  [Bank teller] (Ep. 16)

  Guest Role
• 
  Dan Lee

  3025

  Guest Role
• 
  Lim Wook Jin

  [Yang Hwa's subordinate] (Ep. 12)

  Guest Role
• 
  Im Jun Hyeong

  [Seongju Prison inmate #3185]

  Guest Role
• 
  Lee Tae Ho

  [Ms. Lam's bodyguard] (Ep. 14, 15)

  Guest Role
• 
  Jung Ja Young

  [Bereaved man] (Ep. 15-16)

  Guest Role
• 
  Kwon Ju Young

  [Ms. Lam's bodyguard] (Ep. 14, 16)

  Guest Role
• 
  Lee Dong Won

  [Seongju Prison inmate #1321]

  Guest Role
• 
  Ha Ji Yong

  [No Seung Hwan's wife] (Ep. 16)

  Guest Role
• 
  Ha Joon

  Lim Hee Soo (Ep. 16)

  Guest Role
• 
  Jun Joon Woo

  [Prosecutor] (Ep. 14)

  Guest Role
• 
  Jung Yong Ju

  [Hacker] (Ep. 14-15)

  Guest Role
• 
  Jo Nam Hee

  [Doctor] (Ep. 15)

  Guest Role
• 
  Choi Nam Uk

  [Scrapyard man] (Ep. 15-16)

  Guest Role
• 
  Park Jin Yeong

  [Judge] (Ep. 16)

  Guest Role
• 
  Kim Tae Moon

  [Attorney] (Ep. 16)

  Guest Role
• 
  Han Dae Gwan

  [Urban planning director] (Ep. 16)

  Guest Role

Unknown

• 
  Choi Ki Beom Unknown