Item

Composer

• 
  Copykumo
• 
  Jung Se Rin
• 
  Kim Joon Seok

Director

• 
  Kim Sung Wook

Screenwriter

• 
  Jung Yi Do

Main Role

• 
  Ju Ji Hoon

  Gang Gon

  Main Role
• 
  Jin Se Yeon

  Shin So Young

  Main Role
• 
  Kim Kang Woo

  Jo Se Hwang

  Main Role
• 
  Kim Yoo Ri

  Han Yoo Na

  Main Role

Support Role

• 
  Park Won Sang

  Goo Dong Young [Priest]

  Support Role
• 
  Lee Dae Yeon

  Shin Koo Chul [So Young's father]

  Support Role
• 
  Kim Do Hyun

  Choi Ho Joon [Investigation Team Leader]

  Support Role
• 
  Choi Jin Ho

  Lee Han Gil [Deputy Prosecutor General]

  Support Role
• 
  Kim Byung Gi

  Jo Gwan [Se Hwang's father]

  Support Role
• 
  Kim Min Kyo

  Bang Hak Jae [Inmate]

  Support Role
• 
  Oh Seung Hoon

  Seo Yo Han [Detective]

  Support Role
• 
  Shin Rin Ah

  Gang Da In [Kang Gon's niece]

  Support Role
• 
  Lee Jung Hyun

  Ko Dae Su [Gangster]

  Support Role
• 
  Jung In Gyeom

  Yoo Chul Jo [Se Hwang's aide]

  Support Role
• 
  Choi Kwon

  Kim Dae Heung [Detective]

  Support Role
• 
  Hwang Dong Joo

  Ha Seung Mok [Former firefighter]

  Support Role
• 
  Kim Seung Hoon

  Han Hyung Su [Special prosecutor]

  Support Role
• 
  Park Seon Im

  Yoon So Hee [Scientist]

  Support Role
• 
  Lee Ji Wan

  Kim Ho Yun

  Support Role
• 
  Jung Ji Hoon

  Gang Gon [Young]

  Support Role
• 
  Jo Yi Hyun

  Jin Woong

  Support Role
• 
  Kang Hyun Wook

  Do Jin

  Support Role
• 
  Lee Shi Hyun

  Su Jin

  Support Role
• 
  Hyun Suk Joon

  Jung Hun

  Support Role
• 
  Lee Ju Eun

  Hye Soo

  Support Role
• 
  Lee Sung Woo

  [Detective]

  Support Role
• 
  Lim Jung Min

  [Court Defendant]

  Support Role
• 
  Jo Han Ah Reum

  Yoo Min

  Support Role
• 
  Kim Sun Yool

  Se Eun

  Support Role
• 
  Jang Deok Ju Support Role

Guest Role

• 
  Go In Beom

  [Chief prosecutor] (Ep. 1)

  Guest Role
• 
  Jung Jae Sung

  Kim Jae Jun [Chief prosecutor] (Ep. 1-3, 21)

  Guest Role
• 
  Lee Nam Hee

  Nam Chul Soon [Chairman of Tree of Hope Foundation] (Ep. 1-3, 21, 24)

  Guest Role
• 
  Lee Seung Joon

  [Da In's father] (Ep. 2)

  Guest Role
• 
  Jo Sun Mook

  Lee Hak Joon [CEO of Pyeonghwa Law Firm] (Ep. 2, 8, 21)

  Guest Role
• 
  Sung Chan Ho

  [Doctor] (Ep. 2, 23)

  Guest Role
• 
  Nam Jung Hee

  [Go Dae Soo's grandmother] (Ep. 4, 7)

  Guest Role
• 
  Kim Gun

  [Boy bullying Da In] (Ep. 5)

  Guest Role
• 
  Choi Eun Hoo

  [Boy bullying Da In] (Ep. 5)

  Guest Role
• 
  Cheon Young Min

  [Gambling room girl] (Ep. 7)

  Guest Role
• 
  Song Chang Gyu

  [Prisoner from Gyeongsang] (Ep. 8)

  Guest Role
• 
  Kwon Hyuk Soo

  Mr. Han [Yu Na's father] (Ep. 19, 21, 24)

  Guest Role
• 
  Lee Jae Woo

  Woo Jae Hyung (Ep. 22, 24, 30)

  Guest Role
• 
  Yoon Yoo Sun

  Cho Mi Ae [So Young's mother] (Ep. 24)

  Guest Role
• 
  Park Seung Tae

  Eun Sun [Grandma wife] (Ep. 24)

  Guest Role
• 
  Lee Yoon Sang

  [Director work for Se Hwang] (Ep. 25)

  Guest Role
• 
  Seo Kwang Jae

  [Teacher] (Ep. 29)

  Guest Role
• 
  Lee Chae Yoon

  Shin So Young [Young]

  Guest Role
• 
  Kim Young Dae

  Kim Sung Gyu / Gang Gon [Young]

  Guest Role
• 
  Lee Shi Woo

  Jo Se Hwang [Child]

  Guest Role
• 
  Lee Joo Young

  Kim Kyung Hee [Forensic scientist]

  Guest Role
• 
  Nam Sang Hee

  [Se Eun’s friend - Orphanage for Angels]

  Guest Role
• 
  Jin Hyun Kwang

  [Reporter]

  Guest Role
• 
  Jeon Jeong Il

  [Bereaved family member]

  Guest Role
• 
  Yook Jin Soo

  [Gambling store owner]

  Guest Role
• 
  Kim Dae Heung

  [Constable]

  Guest Role
• 
  Park Mi Ri

  [Nurse]

  Guest Role
• 
  Seo Dong Oh

  [Old bachelor]

  Guest Role
• 
  Park Sang Hyun

  [Hospital employee]

  Guest Role
• 
  Kang Ji Hoon

  [Reporter]

  Guest Role
• 
  Jin Sung Min

  [Reporter]

  Guest Role
• 
  Byun Gun Woo

  [Reporter]

  Guest Role
• 
  Park Jeong Min

  [Prison governor]

  Guest Role
• 
  Ju Su Min

  [Passenger]

  Guest Role
• 
  Kwak Na Yeon

  [Passenger]

  Guest Role
• 
  Oh Jin Seok

  [Passenger reporting]

  Guest Role
• 
  Lee Si Young

  [Citizen]

  Guest Role
• 
  Na Seok Min

  [Detective]

  Guest Role
• 
  Choi Yoon Woo

  [Disaster scene 5-year-old]

  Guest Role
• 
  Kim Chae Hyun

  [Mother of subway tragedy child]

  Guest Role
• 
  Kim Mi Hye

  [News anchor]

  Guest Role
• 
  Kim Nam Ho

  [Secretary]

  Guest Role
• 
  Lee Joo Bin Guest Role
• 
  Jung Se Hoon Guest Role
• 
  Choi Hyun Jin Guest Role
• 
  Moon Hak Jin Guest Role
• 
  Shin Hee Gook Guest Role
• 
  Song Yo Sep Guest Role
• 
  Im Young Shik Guest Role
• 
  Hong Sung Duk Guest Role
• 
  Kim Yun Hui

  [CSI team leader]

  Guest Role
• 
  Shin Dong Ryuk

  [Doctor]

  Guest Role

Unknown

• 
  Choi Young Unknown
• 
  Kwon Oh Soo Unknown
• 
  Jung Min Seok Unknown
• 
  Dok Ko Kwang Unknown