Shadow Detective

Director

• 
  Han Dong Hwa

Main Role

• 
  Lee Sung Min

  Kim Taek Rok

  Main Role
• 
  Jin Goo

  Kook Jin Han

  Main Role
• 
  Gyeong Su Jin

  Lee Seong A

  Main Role
• 
  Lee Hak Joo

  Son Gyeong Chan

  Main Role

Support Role

• 
  Kim Hong Pa

  Seo Gwang Su

  Support Role
• 
  Yoo Seung Mok

  Bae Young Doo [Detective squad chief]

  Support Role
• 
  Oh Dae Hwan

  Ma Sang Gu

  Support Role
• 
  Kim Min Jae

  Detective Han

  Support Role
• 
  Seo Jung Yeon

  Oh Hye Sung

  Support Role
• 
  Ko Kyu Pil

  Gong Chong Moo [Dormitory manager]

  Support Role
• 
  Park Joong Geun

  Kwak Sang Kyu [Detective]

  Support Role
• 
  Hong A Ron

  Detective Ko

  Support Role
• 
  Kim Soo Jin

  Shin Jung Ae

  Support Role
• 
  Jung Yi Ju

  Kim Ji Woo

  Support Role
• 
  Jang Jae Kwon

  [Shin Jung Ae's brother] (Ep. 2)

  Support Role
• 
  Song Young Chang

  An Hyung Woo

  Support Role
• 
  Kwon Tae Won

  Councilman Park

  Support Role
• 
  Kang Shin Goo

  CEO Joo

  Support Role
• 
  Jang Myung Gap

  Shin Sung Han [CEO]

  Support Role
• 
  Hyun Bong Sik

  Koo Dong Bum

  Support Role
• 
  Yoon Je Moon

  Cheon Ki Duk [Drug gang]

  Support Role
• 
  Kim So Yang

  [Detective]

  Support Role

Guest Role

• 
  Kwon Hyuk Bum

  "Antenna" (Ep. 1)

  Guest Role
• 
  Choi Soo Min

  Yeon Sim (Ep. 1, 8)

  Guest Role
• 
  Kim Beom Jun

  Ji Min [Cashier] (Ep. 1)

  Guest Role
• 
  Kim Tae Hoon

  Woo Hyun Seok [Prosecutor] (Ep. 1-2)

  Guest Role
• 
  Lee Dong Gyu

  [Anchorman] (Ep. 1)

  Guest Role
• 
  Hwang Jung Yoon

  [Saleswoman] (Ep. 1)

  Guest Role
• 
  Na Ho Won

  [Security guard] (Ep. 1)

  Guest Role
• 
  Lee Moo Nyoung

  [Noeul Dormitory resident] (Ep. 1)

  Guest Role
• 
  Kim Byung Chul

  Choi Kyo Il (Ep. 2)

  Guest Role
• 
  Kim Jong Yoon

  Lee Jae Ho (Ep. 2)

  Guest Role
• 
  Yoo Eun A

  Han Se Young (Ep. 2-3)

  Guest Role
• 
  Goo Shi Yeon

  Myung Hee [Han Se Young's mother] (Ep. 2-3)

  Guest Role
• 
  Lee Si Young

  [Nurse] (Ep. 2)

  Guest Role
• 
  Son Suk Bae

  [Taxi driver] (Ep. 2-3)

  Guest Role
• 
  Gu Bon Jin

  [Prison guard] (Ep. 2)

  Guest Role
• 
  Son Seung Taek

  [Wedding hall staff] (Ep. 2)

  Guest Role
• 
  Kwon Oh Jin

  Sin Sang Bong (Ep. 3)

  Guest Role
• 
  Jung Ki Sun

  [Homeless man] (Ep. 3)

  Guest Role
• 
  Jang Sung Bum

  An Ju Yong (Ep. 4)

  Guest Role
• 
  Jeong Hee Tae

  Lee Jun Bum (Ep. 4)

  Guest Role
• 
  Eom Ji Man

  [Detective] (Ep. 4)

  Guest Role
• 
  Geum Kwang San

  Choong Bok (Ep. 5-6)

  Guest Role
• 
  Baek Seung Chul

  Park Chun Kyu (Ep. 5)

  Guest Role
• 
  Oh Chae Eun

  [Barista] (Ep. 5)

  Guest Role
• 
  Min Sang Chul

  [Cafe manager] (Ep. 5)

  Guest Role
• 
  Han Sang Chul

  [Boat gang member] (Ep. 6)

  Guest Role
• 
  Yoo Jae Sang

  [Woo Hyun Seok's son] (Ep. 5)

  Guest Role
• 
  Yoon Hyun Gil

  [Woo Hyun Seok's wife] (Ep. 5)

  Guest Role
• 
  Mi Seok

  [Ma Sang Gu's subordinate] (Ep. 5-6)

  Guest Role
• 
  Ahn Nae Sang

  Chairman Jang (Ep. 7-8)

  Guest Role
• 
  Kim Min Chul

  Kook Jin Han [Young] (Ep. 7)

  Guest Role
• 
  Kim Jung Soo

  Kim Sung Hwan [Chairman] (Ep. 7)

  Guest Role
• 
  Lee Kyung Oh

  Han Ju Hwan [Police Commissioner] (Ep. 7)

  Guest Role
• 
  Ma Jung Pil

  [Informant] (Ep. 7)

  Guest Role
• 
  Seol Yu Jin

  [Kook Jin Han's wife] (Ep. 7)

  Guest Role
• 
  Lee Yoon Hee

  Lee Yeong Bae [Police chief] (Ep. 8)

  Guest Role
• 
  Son Ki Chul

  [Reporter] (Ep. 8)

  Guest Role
• 
  Kim Hyeon Tae

  [Detective] (Ep. 8)

  Guest Role
• 
  Kim Jae Bum

  Yang Ki Tae

  Guest Role
• 
  Kwon Ye Eun

  Kim Ji Woo [Young]

  Guest Role
• 
  Choi Woo Gyeom

  [Police officer] (Ep. 7)

  Guest Role
• 
  Jo Yong Hwan

  [Yanbian gangster] (Ep. 6-7)

  Guest Role
• 
  Jang Ho Jin

  Detective Ji

  Guest Role
• 
  Park No Kyeong

  [Money scammer] (Ep. 1)

  Guest Role
• 
  Jung Yeun

  [Angelic subordinate]

  Guest Role

Unknown

• 
  Yoo Da Hye Unknown
• 
  Lee Bo Ram Unknown