Mouse

Composer

• 
  Park Se Jun

Director

• 
  Kang Cheol Woo
• 
  Choi Joon Bae

Screenwriter

• 
  Choi Ran

Main Role

• 
  Lee Seung Gi

  Jung Ba Reum

  Main Role
• 
  Lee Hee Joon

  Ko Mu Chi

  Main Role
• 
  Park Ju Hyun

  O Bong I

  Main Role
• 
  Gyeong Su Jin

  Choi Hong Ju

  Main Role

Support Role

• 
  Woo Ji Hyun

  Koo Dong Gu [Ba Reum's friend]

  Support Role
• 
  Ahn Jae Wook

  Han Seo Jun [Neurosurgeon]

  Support Role
• 
  Kim Jung Nan

  Seong Ji Eun [Seo Jun's wife]

  Support Role
• 
  Kwon Hwa Woon

  Seong Yo Han [Doctor]

  Support Role
• 
  Jo Jae Yun

  Daniel Lee [Researcher]

  Support Role
• 
  Hyun Bong Sik

  Bok Ho Nam [Police chief]

  Support Role
• 
  Ahn Nae Sang

  Park Du Seok [Detective]

  Support Role
• 
  Yoon Seo Hyun

  Kang Gi Hyeok [Detective]

  Support Role
• 
  P.O

  Sin Sang [Detective]

  Support Role
• 
  Kim Min Soo

  Lee Min Su [Detective]

  Support Role
• 
  Kang Mal Geum

  [Ba Reum's aunt]

  Support Role
• 
  Jung Ae Ri

  Choi Yeong Sin [Government official]

  Support Role
• 
  Kim Kang Hoon

  Jae Hun

  Support Role
• 
  Kim Ye Sung

  Park Hyeon Seok

  Support Role

Guest Role

• 
  Park Yong

  Kim Ji Wan (Ep. 1)

  Guest Role
• 
  Lee Ja Ryoung

  Kim U Seon (Ep. 1)

  Guest Role
• 
  Yoon Bok Sung

  Jung Jung Seok (Ep. 1)

  Guest Role
• 
  Min Eung Shik

  Sin Jae Hyeong (Ep. 1)

  Guest Role
• 
  Jang Eui Don

  Attorney Hwang [Seo Jun's lawyer] (Ep. 1)

  Guest Role
• 
  Seo Woo Jin

  Jae Hun [Young] (Ep. 1)

  Guest Role
• 
  Song Min Jae

  Ko Mu Chi [Young] (Ep. 1)

  Guest Role
• 
  Kang Chan Yang

  [Nurse] (Ep. 1)

  Guest Role
• 
  Jung Kang Hee

  [Mu Chi's father] (Ep. 1)

  Guest Role
• 
  Seo Jung Yeon

  [Mu Chi's mother] (Ep. 1)

  Guest Role
• 
  Kim Mi Hye

  [Jae Hun's teacher] (Ep. 1)

  Guest Role
• 
  Seong Chan Ho

  [Government official] (Ep. 1)

  Guest Role
• 
  Han Chang Hyun

  [Government employee] (Ep. 1)

  Guest Role
• 
  Park Byung Wook

  [South Korean president] (Ep. 1)

  Guest Role
• 
  Lee Seo Joon

  Na Chi Guk [Ba Reum's high school friend / Prison guard] (Ep. 1-2, 5, 14-15)

  Guest Role
• 
  Kim Min Kyung

  O Mi Sun [Su Jeong's mother] (Ep. 1-2, 16-17, 20)

  Guest Role
• 
  Kim Young Ok

  [Bong I's grandmother] (Ep. 1-3)

  Guest Role
• 
  Kim Young Jae

  Ko Mu Won (Ep. 1-5)

  Guest Role
• 
  Jo Yeon Ho

  Ko Mu Won [Young] (Ep. 1, 6)

  Guest Role
• 
  Yoo Ha Bok

  Sin Seong Min [Assembly chairman] (Ep. 1, 7, 13-14, 18, 20)

  Guest Role
• 
  Ha Young

  Song Su Jeong (Ep. 1, 8)

  Guest Role
• 
  Jung Suk Yong

  Woo Jae Pil (Ep. 1, 8-10)

  Guest Role
• 
  Park So Yi

  Choi Hong Ju [Young] (Ep. 1, 15, 19-20)

  Guest Role
• 
  Kim Kyul

  [Jae Hun's father] (Ep. 1, 17-18)

  Guest Role
• 
  Lee Eon Jeong

  [Ba Reum's mother] (Ep. 1, 17, 20)

  Guest Role
• 
  Kim Dong Ha

  Jae Min [Jae Hun's step-brother] (Ep. 1, 18)

  Guest Role
• 
  Ahn Seo Yeon

  Jae Hui [Jae Hun's step-sister] (Ep. 1, 18)

  Guest Role
• 
  Joo Ye Rim

  O Bong I [Young] (Ep. 2)

  Guest Role
• 
  Seo Dong Hyun

  Ko Mu Chi [Young] (Ep. 2)

  Guest Role
• 
  Park Hye Na

  Byeon Sun Yeong [Victim] (Ep. 2)

  Guest Role
• 
  Im Yu Ran

  [Witness] (Ep. 2)

  Guest Role
• 
  Na Ho Won

  [Bus driver] (Ep. 2)

  Guest Role
• 
  Jeong Seung Wook

  [Messenger] (Ep. 2)

  Guest Role
• 
  Kim Jung Han

  [Man at the bus stop] (Ep. 2)

  Guest Role
• 
  Bae Seong Il

  [Detective] (Ep. 2-3)

  Guest Role
• 
  Lee Si Young

  [ER nurse] (Ep. 2-3)

  Guest Role
• 
  Seon Ah Rin

  Jo Mi Jeong (Ep. 2-3, 5)

  Guest Role
• 
  Song In Seop

  [Prison doctor] (Ep. 2, 6)

  Guest Role
• 
  Jung Eun Pyo

  Kang Deok Su (Ep. 2-3, 7-8, 10-12)

  Guest Role
• 
  Chun Jung Ha

  [Chi Guk's mother] (Ep. 2-3, 16)

  Guest Role
• 
  Jang Dae Woong

  Park Ju Yeong [Police officer] (Ep. 2, 4)

  Guest Role
• 
  Yoo Yong

  [Sisters killer] (Ep. 2, 9)

  Guest Role
• 
  Kim Woo Jin

  Police Officer Kim (Ep. 2, 14)

  Guest Role
• 
  Song Boo Geon

  Song Su Ho (Ep. 2, 17)

  Guest Role
• 
  Jung Woon

  [Gangster] (Ep. 3)

  Guest Role
• 
  Jung Nan Hee

  [Teacher] (Ep. 3)

  Guest Role
• 
  Kwak Min Ho

  [Prisoner] (Ep. 3)

  Guest Role
• 
  Jung Hee Young

  [Store owner] (Ep. 3)

  Guest Role
• 
  Kim Ro Sa

  [Student's mother] (Ep. 3)

  Guest Role
• 
  Lee Do Hyung

  [Ba Reum's uncle] (Ep. 3, 14)

  Guest Role
• 
  Baek Jae Woo

  Song Su Ho [Young] (Ep. 3, 16-20)

  Guest Role
• 
  Kim Ha Eon

  Kim Han Guk (Ep. 3-4)

  Guest Role
• 
  Park Eun Young

  [Staffing agency woman] (Ep. 3-4)

  Guest Role
• 
  Son Woo Hyun

  Kim Jun Seong (Ep. 3-4, 18)

  Guest Role
• 
  Kang Suk Won

  [Talk show guest] (Ep. 4)

  Guest Role
• 
  O Ji Yeong

  [Talk show guest] (Ep. 4)

  Guest Role
• 
  Jang Jae Kwon

  [Talk show guest] (Ep. 4)

  Guest Role
• 
  Park Jae Wan

  [Police commissioner] (Ep. 4)

  Guest Role
• 
  Jo Wan Ki

  Reporter Yang (Ep. 4-5)

  Guest Role
• 
  Park Ki Ryung

  [OBN News chief] (Ep. 4-5)

  Guest Role
• 
  Cherish Maningat

  [Han Guk's mother] (Ep. 4-5, 15, 20)

  Guest Role
• 
  Oh Seung Chan

  Medical Examiner Park (Ep. 4, 10)

  Guest Role
• 
  Yang Ha Yoon

  Min Jeong (Ep. 5)

  Guest Role
• 
  Kim Hyo Kyung

  Byeon Min Ji (Ep. 5)

  Guest Role
• 
  Byun Yoon Jeong

  Mrs. O (Ep. 5)

  Guest Role
• 
  Kim Young Joo

  [Staff] (Ep. 5)

  Guest Role
• 
  Shim Yoo Seung

  [Staff] (Ep. 5)

  Guest Role
• 
  Uhm Hye Soo

  [Police officer] (Ep. 5)

  Guest Role
• 
  Kim Joo Ah

  [Orphanage employee] (Ep. 5)

  Guest Role
• 
  Choi Yi Sun

  [Motorcycle deliveryman] (Ep. 5)

  Guest Role
• 
  Chae Yeon Hee

  [Grocery store employee] (Ep. 5)

  Guest Role
• 
  Kim Sung Kyung

  [Fact Check host] (Ep. 5-6)

  Guest Role
• 
  Oh Min Joon

  [Bully] (Ep. 5, 9)

  Guest Role
• 
  Kang Ro Chae

  Park Hye Won [Hostess bar worker] (Ep. 5, 10)

  Guest Role
• 
  Bo Ra Na

  [Hostess bar manager] (Ep. 5, 10)

  Guest Role
• 
  So Yun Ho

  [Police officer] (Ep. 6)

  Guest Role
• 
  Cha Seung Min

  [NFS staff] (Ep. 6)

  Guest Role
• 
  Kang Moon Kyung

  [President] (Ep. 6, 12)

  Guest Role
• 
  Hwang Se On

  Kim Da Seul [Sin Sang's girlfriend] (Ep. 6, 13-14)

  Guest Role
• 
  Kim Ah Ram

  [Ji Eun's employee] (Ep. 7)

  Guest Role
• 
  Shin Hee Gook

  [Dong Gu's friend] (Ep. 7)

  Guest Role
• 
  Park Joon Sang

  [Disciplinary hearing judge] (Ep. 7)

  Guest Role
• 
  Park Jong Moo

  [Tie-knot expert] (Ep. 7)

  Guest Role
• 
  Jeong Yoon Hee

  [Reporter] (Ep. 7)

  Guest Role
• 
  Hong Eun Jeong

  Seul Gi [Dong Gu's fiancé] (Ep. 7, 10)

  Guest Role
• 
  Song Jae Hee

  Woo Hyeong Cheol [Attorney] (Ep. 7-10)

  Guest Role
• 
  Kwon Hyuk Soo

  [Doctor] (Ep. 7-10, 17, 19-20)

  Guest Role
• 
  Yeo Woon Bok

  [Doctor] (Ep. 7, 14)

  Guest Role
• 
  Kim Su In

  Choi Hong Ju [Young] (Ep. 8)

  Guest Role
• 
  Hong Suk Youn

  Kim Baek Gi (Ep. 8)

  Guest Role
• 
  Park Hyun Jeong

  Kim Yeong Hui (Ep. 8)

  Guest Role
• 
  Jung Hyun Seok

  No Yeong Hun [Doctor] (Ep. 8)

  Guest Role
• 
  Ji Sung Geun

  [Police officer] (Ep. 8)

  Guest Role
• 
  Jung Byung Ho

  Jung Man Ho (Ep. 8-10)

  Guest Role
• 
  Shin Yeon Suk

  [Deok Su's mother] (Ep. 8, 10)

  Guest Role
• 
  Go Woo Ri

  Jennifer (Ep. 9)

  Guest Role
• 
  Garrison Michael Farquharson-Keener

  Dr. Fallon (Ep. 9)

  Guest Role
• 
  Seo Min Sung

  Prison Officer Kim (Ep. 9)

  Guest Role
• 
  Paul Battle

  [Cambridge doctor] (Ep. 9)

  Guest Role
• 
  Hwang Yoon Joo

  [Stalked woman] (Ep. 9)

  Guest Role
• 
  Hwang Jung Yoon

  [Stalked woman's sister] (Ep. 9)

  Guest Role
• 
  Ok Il Jae

  (Ep. 9)

  Guest Role
• 
  Choi Yoon Bum

  Nam Yun Beom (Ep. 9-10)

  Guest Role
• 
  Kim Ha Neul

  Jung Su Jin (Ep. 9-10)

  Guest Role
• 
  Kim Moon Ho

  Lee Jae Sik [Prisoner] (Ep. 9, 13-14)

  Guest Role
• 
  Jang Yong Chul

  Kim Bong Cheol [Prisoner] (Ep. 9, 13-14)

  Guest Role
• 
  Park Sang Hyun

  Lee Yun Jung (Ep. 10)

  Guest Role
• 
  Seo Yun Hyuk

  Woo Hyeong Cheol [Child] (Ep. 10)

  Guest Role
• 
  Kim Ji Su

  [Hye Won's friend] (Ep. 10)

  Guest Role
• 
  Yoo Yeon

  [Hyeong Cheol's mother] (Ep. 10)

  Guest Role
• 
  Shin Kang Kyun

  [Jin A's grandfather] (Ep. 10)

  Guest Role
• 
  Kwon Ye Eun

  Yu Na [Bong I's neighbor] (Ep. 10-11)

  Guest Role
• 
  Choi Sol Hui

  [Yu Na's mother] (Ep. 10-11)

  Guest Role
• 
  Park Mi Na

  [Convenience store woman] (Ep. 10, 16)

  Guest Role
• 
  Choi Ji Woo

  [Restaurant customer] (Ep. 11)

  Guest Role
• 
  Park Jung Eon

  [Judge] (Ep. 11)

  Guest Role
• 
  Moon Hak Jin

  [Parole officer] (Ep. 11)

  Guest Role
• 
  Choi Gyo Shik

  [Man discovers body] (Ep. 12-13)

  Guest Role
• 
  Ha Seung Yeon

  Angela (Ep. 14)

  Guest Role
• 
  Ko Eun Bi

  Angela [Young] (Ep. 14)

  Guest Role
• 
  Min Jung Sup

  Han Su Cheol [Gas station worker] (Ep. 14)

  Guest Role
• 
  Ji Tae Yang

  Kim Byeong Tae (Ep. 14)

  Guest Role
• 
  Kim Sung Jun

  Myung Go Nam (Ep. 14)

  Guest Role
• 
  Kim Bi Bi

  [Nun] (Ep. 14)

  Guest Role
• 
  Lee Yong Nyeo

  [Student's grandmother] (Ep. 14)

  Guest Role
• 
  Im Yong Soon

  [School custodian] (Ep. 14)

  Guest Role
• 
  Shin Soo Hyun

  Michaela (Ep. 14, 18)

  Guest Role
• 
  Choi Min Kyu

  Han Su Cheol [Young] (Ep. 14, 20)

  Guest Role
• 
  Park Se Ryeon

  [Nurse] (Ep. 15)

  Guest Role
• 
  Seo Suk Gyu

  [Motel OZ agent] (Ep. 15-16)

  Guest Role
• 
  Lee Wang Soo

  [Computer repairman] (Ep. 15, 18)

  Guest Role
• 
  Jung Ja Young

  [Motel staff] (Ep. 16)

  Guest Role
• 
  Min Sang Chul

  [Doctor] (Ep. 16)

  Guest Role
• 
  Son Seung Hun

  [Insurance agent] (Ep. 16)

  Guest Role
• 
  Kim Su Kyung

  [Park Jong Ho's sister] (Ep. 16, 20)

  Guest Role
• 
  Kim Deok Ju

  [Jae Hun's neighbor] (Ep. 17)

  Guest Role
• 
  Kim Young Sun

  [Science teacher] (Ep. 17)

  Guest Role
• 
  Kwon Oh Geon

  Seong Yo Han [Young] (Ep. 17-18)

  Guest Role
• 
  Moon Yong Il

  Prosecutor Yun (Ep. 18)

  Guest Role
• 
  Kim Yo Han

  [Yeong Sin's driver] (Ep. 20)

  Guest Role
• 
  Lee Seung Hyung

  [Yeong Sin's attorney] (Ep. 20)

  Guest Role
• 
  Pyo Chang Won

  [Profiler] (Ep. 20)

  Guest Role
• 
  Kim Yo Han

  [Post credit scene] (Ep. 20)

  Guest Role
• 
  Kim Hyo Jin

  Bang Yu Hwa

  Guest Role
• 
  Kim Sang Il

  Dr. Park Min Jun

  Guest Role
• 
  Lee Chae Hyun

  Hun Seok [Ba Reum's nephew]

  Guest Role
• 
  Lee Jae Eun

  [Dong Gu's mother]

  Guest Role
• 
  Kim Dae Kook

  [Police officer]

  Guest Role
• 
  Seon Yul U

  [Detective]

  Guest Role
• 
  Kim Young Mi

  [Announcer]

  Guest Role
• 
  Cho Yun U

  [Kid in alley]

  Guest Role
• 
  Kim Eun Jin

  [Nanny]

  Guest Role
• 
  Jeon Jeong Il

  [Korean department]

  Guest Role
• 
  Uhm Ja Yoon

  [Doctor]

  Guest Role
• 
  Lee Soo Yeon Guest Role
• 
  Jung Min Joon Guest Role

Unknown

• 
  Park Jin Soo Unknown
• 
  Im Too Chul Unknown
• 
  Baek Bum Suk Unknown
• 
  Lee Ji Yun Unknown