WATCHER (2019)

Composer

• 
  Kim Tae Seong

Director

• 
  Ahn Gil Ho

Editor

• 
  Steve M. Choe

Screenwriter

• 
  Han Sang Woon

Main Role

• 
  Seo Kang Joon

  Kim Young Goon

  Main Role
• 
  Han Seok Kyu

  Do Chi Kwang

  Main Role
• 
  Kim Hyun Joo

  Han Tae Joo

  Main Role

Support Role

• 
  Park Joo Hee

  Jo Soo Yeon

  Support Role
• 
  Heo Sung Tae

  Jang Hae Ryong [Special crime squad leader]

  Support Role
• 
  Joo Jin Mo

  Park Jin Woo [Deputy commissioner]

  Support Role
• 
  Jung Do Won

  Hong Jae Shik [Tae joo's aide]

  Support Role
• 
  Kim Soo Jin

  Yeom Dong Sook [Commissioner]

  Support Role
• 
  Ahn Kil Kang

  Kim Jae Myung [Young Goon's father]

  Support Role
• 
  Woo Jeong Won

  Park Ji Hyun [Psychiatrist]

  Support Role
• 
  Park Ji Hoon

  Park Shi Yeong

  Support Role
• 
  Jung Soon Won

  Jung Han Wook

  Support Role
• 
  Kim Dae Geon

  Detective Chan Hee

  Support Role
• 
  Park Sung Il

  Department Head Kim

  Support Role
• 
  Kim Dan Woo

  Ah Reum [Byeong Gil's daughter]

  Support Role
• 
  Jeon Seok Chan

  Kim Jo Han

  Support Role
• 
  Park Hoon

  Yoon Ji Hoon [Han Tae Joo's husband]

  Support Role
• 
  Kim Dong Hyun

  Kim Sang Joon

  Support Role
• 
  Han Sang Hoon

  [Coroner]

  Support Role
• 
  Yoo Jung Ho

  Park Jeong Geun

  Support Role
• 
  Park Mi Hyun

  [Young Goon's mother]

  Support Role
• 
  Shin Hyun Jong

  Min Young Ki [District Prosecutor]

  Support Role
• 
  Lee Eol

  Jang Hyun Goo

  Support Role

Guest Role

• 
  Lee Jae Yoon

  Kim Gang Wook [Detective] (Ep. 1-2, 12-13)

  Guest Role
• 
  Jung Min Sung

  Son Byeong Gil [Kidnapper] (Ep. 1-2)

  Guest Role
• 
  Park Yong

  (Ep. 1)

  Guest Role
• 
  Yu Seung Il

  [Driving violator] (Ep.1)

  Guest Role
• 
  Kim Geon U

  Kim Cha Hoon (Ep. 1-2)

  Guest Role
• 
  Moon Woo Jin

  Kim Young Goon [Young]

  Guest Role
• 
  Lee Seung Chul

  Chairman Jung Seok Tae

  Guest Role
• 
  Chae Dong Hyun

  Lee Dong Yoon [Prosecutor] (Ep. 3-4)

  Guest Role
• 
  Kim Yong Ji

  Lee Hyo Jung (Ep. 3-4)

  Guest Role
• 
  Yoo Ha Joon

  Oh Sang Do

  Guest Role
• 
  Lee Joong Ok

  [Jae Shik's friend in drugstore](Ep. 5, 8, 12)

  Guest Role
• 
  Lee Nam Hee

  Shin Oh Sung [CEO of Oh Sung Capital]

  Guest Role
• 
  Yu Yeon Seok

  [Detective]

  Guest Role
• 
  Kim Seung Hyun

  [Trafficker]

  Guest Role
• 
  Kim Dong Hyun

  Kim Sang Joon (Ep. 1-2)

  Guest Role
• 
  Lee Dong Kyu

  [Reporter]

  Guest Role
• 
  Kim Joo Yeon

  Baek Song I

  Guest Role
• 
  Yi Seo

  Jang Ji Yoon (Ep. 14)

  Guest Role
• 
  Han Seung Soo

  [Regional investigation unit detective]

  Guest Role
• 
  Won Gun Su

  [Detective 2]

  Guest Role

Bit part

• 
  Shin Moon Sung

  (Ep.10)

  Bit part
• 
  Yong Jin

  [Prisoner]

  Bit part
• 
  Jang Eui Don

  [Patient]

  Bit part
• 
  Seo Myung Chan

  [Corpse Gangster]

  Bit part

Unknown

• 
  Jeon Jin Oh Unknown