Confession

Composer

• 
  Jung Se Rin
• 
  Kim Joon Seok

Director

• 
  Kim Chul Gyu
• 
  Yoon Hyun Gi

Screenwriter

• 
  Im Hee Chul

Main Role

• 
  Lee Jun Ho

  Choi Do Hyun

  Main Role
• 
  Shin Hyun Been

  Ha Yoo-Ri

  Main Role
• 
  Yoo Chea Myung

  Ki Choon Ho

  Main Role
• 
  Nam Gi Ae

  Madame Jin

  Main Role

Support Role

• 
  Yoon Kyung Ho

  Heo Jae Man / Cho Gi Tak [Prison guard]

  Support Role
• 
  Ryu Kyung Soo

  Han Jong Goo [Eun Seo Gu's murder case suspect]

  Support Role
• 
  Lee Ki Hyuk

  Lee Hyun Joon [Prosecutor]

  Support Role
• 
  Song Young Chang

  Oh Taek Jin [CEO of Yukwang Corporation]

  Support Role
• 
  Yoo Sung Joo

  Ji Chang Ryul [Law firm head]

  Support Role
• 
  Choi Kwang Il

  Choi Pil Soo [Do Hyun's father]

  Support Role
• 
  Jung Hee Tae

  Seo Geun Pyo [Detective]

  Support Role
• 
  Jang Jae Ho

  Lee Hyung Chan [Detective]

  Support Role
• 
  Kim Young Hoon

  Park Shi Kang [Assemblyman]

  Support Role
• 
  Kim Sung Hoon

  Sung Joon Shik [Reporter]

  Support Role
• 
  Choi Dae Hoon

  Hwang Kyo Shik [Taek Jin's secretary]

  Support Role
• 
  Ryu Sung Hoon

  Yang In Bum [Chief Prosecutor]

  Support Role
• 
  Moon Sung Keun

  Cho Myung Geun

  Support Role
• 
  Kim Do Hyun

  Woo Ho Jin [Cardiac Surgeon]

  Support Role
• 
  Kim Jung Hwa

  Jenny Song / Song Jae In

  Support Role
• 
  Moon Tae Yu

  Noh Seon Hoo

  Support Role
• 
  Park Su Yeon

  Yoo Hyeon Yi [Yoo Joon Hwan's mother]

  Support Role
• 
  Choi Min Yeong

  Yoo Jun Hwan

  Support Role
• 
  Han Kyu Won

  Choi Kyung Ho / Mark Choi [Jenny Song's aide]

  Support Role
• 
  Kim Joong Ki

  Yang In Bum

  Support Role
• 
  Jung Gi Sub

  Cha Seung Hu [Colonel / Victim of Do Hyeon's father]

  Support Role
• 
  Shim Min

  Kim Sun Hee [Flower shop worker]

  Support Role
• 
  Park Mi Hyun

  Judge Na

  Support Role
• 
  Kim Jae Seung

  Lee Chul Soo [Kim Sun Hee's ex-boyfriend]

  Support Role
• 
  Moon Ho Jin

  Ha Myeong Su

  Support Role

Guest Role

• 
  Jo Seung Yun

  [Criminal Psychologist] (Ep.2-3)

  Guest Role
• 
  Choi Bum Ho

  [Judge] (Ep. 3)

  Guest Role
• 
  Song Yoo Hyun

  Jo Kyung Sun [Nurse] (Ep. 4-7)

  Guest Role
• 
  Park Noh Shik

  [Janitor] (Ep. 8)

  Guest Role
• 
  Keum Dong Hyun

  [Courier company employee]

  Guest Role
• 
  Son Seon Geun

  [Judge, Landscape Court Trial]

  Guest Role
• 
  Kim Kwi Seon

  Kim Seong Jo

  Guest Role
• 
  Lee Yoo Jung

  [Kim Seong Jo's wife]

  Guest Role
• 
  Ahn Soo Ho

  [guided Do Hyun to Construction site]

  Guest Role
• 
  Choi Gyo Shik

  [Security guard that helps Do Hyeon]

  Guest Role
• 
  Choi Young Woo

  [Reporter]

  Guest Role
• 
  Lee Sung Il

  [Shoe Store Owner]

  Guest Role
• 
  Jeong Seo Yeon

  [Female teacher]

  Guest Role
• 
  Oh Seung Chan

  [Reporter] (Ep. 14)

  Guest Role
• 
  Richard Kim

  [Brigade Commander]

  Guest Role
• 
  Kim Seung Hyun

  [Gangster]

  Guest Role
• 
  Lee Dong Gyu

  [Reporter]

  Guest Role
• 
  Park Hye Jin

  [Orphanage director]

  Guest Role
• 
  Choi Da Hye

  Yoo Hyeon Yi [young]

  Guest Role
• 
  Kim Dong Yong

  [Prison guard]

  Guest Role
• 
  Lee Na Hyun

  Ko Eun Joo

  Guest Role
• 
  Jeon Shin Hwan

  Kang Sang Hoon [Eun Joo's boyfriend]

  Guest Role

Unknown

• 
  Tae In Ho Unknown
• 
  Jeon Seok Ho Unknown
• 
  Lee Heon Ju

  [Shi Gang's secretary]

  Unknown
• 
  Jung Jong Woo Unknown
• 
  Han Seung Do Unknown

Bit part

• 
  Kwon Hyuk Sung

  [Prison guard]

  Bit part
• 
  Kim Yong Jun

  [Forensic team leader]

  Bit part
• 
  Na Eun Saem

  [Investigator]

  Bit part
• 
  Jo Yi Haeng

  [Prosecutor] (ep.16)

  Bit part
• 
  Song Chang Gyu Bit part
• 
  Kim Mi Hye

  [News Anchor] (Ep. 10, 12)

  Bit part
• 
  Kim Do Ah Bit part