Miss Night and Day

Director

• 
  Lee Hyung Min
• 
  Choi Sun Min

Screenwriter

• 
  Park Ji Ha

Main Role

• 
  Jung Eun Ji

  Lee Mi Jin

  Main Role
• 
  Lee Jung Eun

  Im Sun

  Main Role
• 
  Choi Jin Hyuk

  Gye Ji Ung

  Main Role
• 
  Baek Seo Hoo

  Ko Won

  Main Role

Support Role

• 
  Yoon Byung Hee

  Ju Byeong Deok [Investigator]

  Support Role
• 
  Moon Ye Won

  Tak Cheon Hui [Prosecutor]

  Support Role
• 
  Kim Kwang Shik

  Cha Jae Seong [Deputy chief prosecutor]

  Support Role
• 
  Kim Mi Ran

  Woo Yeon [Civil affairs officer]

  Support Role
• 
  Choi Moo In

  Seo Mal Tae [Retired police officer]

  Support Role
• 
  Kim Jae Rok

  Geum Gwang Seok [Senior intern]

  Support Role
• 
  Bae Hae Seon

  Na Ok Hui

  Support Role
• 
  Choi Bum Ho

  Ko Na Heun [Former soldier]

  Support Role
• 
  Jung Jae Sung

  Baek Cheol Gyu [Hospital honorary director]

  Support Role
• 
  Kim Ah Young

  Do Ga Yeong [Mi Jin's best friend]

  Support Role
• 
  Jung Young Joo

  Im Cheong [Mi Jin's mother]

  Support Role
• 
  Jung Suk Yong

  Lee Hak Chan [Mi Jin's father]

  Support Role
• 
  Ahn Sang Woo

  Do Pyeon Gang [Real estate agent]

  Support Role

Guest Role

• 
  Jeon Sang Hyub

  Choi Geun Ju (Ep. 1)

  Guest Role
• 
  Choi Yeon Ji

  Lee Mi Jin (Ep. 1)

  Guest Role
• 
  Choi Yo Woon

  [Doctor] (Ep. 1)

  Guest Role
• 
  Yang Joo Ho

  [Detective] (Ep. 1)

  Guest Role
• 
  Kim Young Mi

  [Veterinarian] (Ep. 1)

  Guest Role
• 
  Park Geon Rak

  [Police officer] (Ep. 1)

  Guest Role
• 
  Ha Min

  [Job interviewer] (Ep. 1)

  Guest Role
• 
  Kim Joon Hwan

  [Job interviewer] (Ep. 1)

  Guest Role
• 
  Lee Ki Bbeum

  [Job interview staff] (Ep. 1)

  Guest Role
• 
  Kwak Yeong Seon

  [Job interviewer] (Ep. 1)

  Guest Role
• 
  Lee Ha Nee

  [Ko Won’s secretary] (Ep. 1)

  Guest Role
• 
  Cho Yu Jin

  [Employee] (Ep. 2)

  Guest Role
• 
  Kim Yoon Hong

  Lee Un Je (Ep. 3)

  Guest Role
• 
  Kang Chan Yang

  [Cat shelter director] (Ep. 4)

  Guest Role
• 
  Choi Gyo Shik

  [Informant] (Ep. 4, 8)

  Guest Role
• 
  Joo Seung Do

  [Prison guard] (Ep. 5)

  Guest Role
• 
  Ha Dong Joon

  [Medical officer] (Ep. 5)

  Guest Role
• 
  Kim Hak Soo

  [Elevator guy] (Ep. 5)

  Guest Role
• 
  Lee Hyun

  [Im Cheong's customer] (Ep. 6)

  Guest Role
• 
  Baek Gyeong Seon

  [Thug] (Ep. 6)

  Guest Role
• 
  Park Sol Ji

  [Thug] (Ep. 6)

  Guest Role
• 
  Kim Ga Hee

  Ha Yeong (Ep. 6-7)

  Guest Role
• 
  Im Yu Ran

  Seo Sun Deok (Ep. 7)

  Guest Role
• 
  Lee Jung Yeol

  [Retired detective] (Ep. 7)

  Guest Role
• 
  Lee Bong Ha

  [Im Cheong’s friend] (Ep. 7)

  Guest Role
• 
  Shim Hye Rim

  [Missing person’s daughter] (Ep. 7)

  Guest Role
• 
  Kim Bong Jo

  Mr. Jung (Ep. 8)

  Guest Role
• 
  Park Jae Wan

  [Detective] (Ep. 8)

  Guest Role
• 
  Jung Woo Young

  [Reporter] (Ep. 9)

  Guest Role
• 
  Kim Jun Seok

  [Medical examiner] (Ep. 9)

  Guest Role
• 
  Jeon Ah Hee

  [Nurse] (Ep. 9, 11)

  Guest Role
• 
  Seo Nam Yong

  [Naturalist] (Ep. 10)

  Guest Role
• 
  Min Hyo Kyung

  [Restaurant worker] (Ep. 11)

  Guest Role
• 
  Kang Ji Woon

  [Private investigator] (Ep. 11-12)

  Guest Role
• 
  Lee Joo Hyung

  [Club CEO] (Ep. 12)

  Guest Role
• 
  Lee Da Kyung

  [Detective] (Ep. 12)

  Guest Role
• 
  Seo Eun Joo

  [Cleaning lady] (Ep. 13)

  Guest Role
• 
  Jo Eun Ah

  [Upset woman] (Ep. 13)

  Guest Role
• 
  Yoon Bak

  Yun Park [Fiscal] (Ep. 16)

  Guest Role
• 
  Lee Ye Hyun

  [Mi Jin's co-worker] (Ep. 16)

  Guest Role
• 
  Oh Jung Taek

  Ji Dong Gwon

  Guest Role
• 
  Jung Soo Kyo

  Detective Kwon

  Guest Role
• 
  Bae Jae Won

  Bbobi

  Guest Role
• 
  Baek So Mi

  Lim Sun

  Guest Role
• 
  Kim Ji Hoon

  Gye Ji Ung [Child]

  Guest Role
• 
  Kim Ye Bin

  Lee Mi Jin [Child]

  Guest Role
• 
  Kyung Ki Hyun

  [Ko Won's manager]

  Guest Role
• 
  Min Chae Eun

  [Gye Ji Ung's mother]

  Guest Role
• 
  Jo Ju Kyung

  [Victim]

  Guest Role
• 
  Jeon Eun Chae

  Kang Gyeong Hui

  Guest Role
• 
  Lee Heung Yun

  [Intern] (Ep. 16)

  Guest Role

Unknown

• 
  Kim Do Ah Unknown
• 
  Gil Gyu Min Unknown