Pemeran Mouse

Lee Seung Gi (이승기)

as Jung Ba Reum

Pemeran Utama

Lee Hee Jun (이희준)

as Ko Mu Chi

Pemeran Utama

Park Ju Hyun (박주현)

as O Bong I

Pemeran Utama

Gyeong Su Jin (경수진)

as Choi Hong Ju

Pemeran Utama

Ahn Jae Wook

as Han Seo Jun [Neurosurgeon]

Pemeran Pembantu

Kwon Hwa Woon

as Seong Yo Han [Doctor]

Pemeran Pembantu

Jo Jae Yun (조재윤)

as Daniel Lee [Researcher]

Pemeran Pembantu

Hyun Bong Sik

as Bok Ho Nam [Police chief]

Pemeran Pembantu

Ahn Nae Sang

as Park Du Seok [Detective]

Pemeran Pembantu

Yoon Seo Hyun

as Kang Gi Hyeok [Detective]

Pemeran Pembantu

P.O (피오)

as Sin Sang [Detective]

Pemeran Pembantu

Kim Min Soo

as Lee Min Su [Detective]

Pemeran Pembantu

Jung Ae Ri

as Choi Yeong Sin [Government official]

Pemeran Pembantu

Kim Kang Hoon

as Jae Hun

Pemeran Pembantu

Kim Ye Sung

as Park Hyeon Seok

Pemeran Pembantu

Park Yong

as Kim Ji Wan (Ep. 1)

Bintang Tamu

Lee Ja Ryoung

as Kim U Seon (Ep. 1)

Bintang Tamu

Yoon Bok Sung

as Jung Jung Seok (Ep. 1)

Bintang Tamu

Min Eung Shik

as Sin Jae Hyeong (Ep. 1)

Bintang Tamu

Seo Woo Jin

as Jae Hun [Young] (Ep. 1)

Bintang Tamu

Song Min Jae

as Ko Mu Chi [Young] (Ep. 1)

Bintang Tamu

Kang Chan Yang

as [Nurse] (Ep. 1)

Bintang Tamu

Seong Chan Ho

as [Government official] (Ep. 1)

Bintang Tamu

Han Chang Hyun

as [Government employee] (Ep. 1)

Bintang Tamu

Park Byung Wook

as [South Korean president] (Ep. 1)

Bintang Tamu

Kim Young Jae

as Ko Mu Won (Ep. 1-5)

Bintang Tamu

Jo Yeon Ho

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

Bintang Tamu

Yoo Ha Bok

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

Bintang Tamu

Ha Young (하영)

as Song Su Jeong (Ep. 1, 8)

Bintang Tamu

Jung Suk Yong

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

Bintang Tamu

Park So Yi

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

Bintang Tamu

Joo Ye Rim

as O Bong I [Young] (Ep. 2)

Bintang Tamu

Seo Dong Hyun

as Ko Mu Chi [Young] (Ep. 2)

Bintang Tamu

Park Hye Na

as Byeon Sun Yeong [Victim] (Ep. 2)

Bintang Tamu

Im Yu Ran

as [Witness] (Ep. 2)

Bintang Tamu

Na Ho Won

as [Bus driver] (Ep. 2)

Bintang Tamu

Jeong Seung Wook

as [Messenger] (Ep. 2)

Bintang Tamu

Kim Jung Han

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

Bintang Tamu

Bae Seong Il

as [Detective] (Ep. 2-3)

Bintang Tamu

Lee Si Young

as [ER nurse] (Ep. 2-3)

Bintang Tamu

Seon Ah Rin

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

Bintang Tamu

Song In Seop

as [Prison doctor] (Ep. 2, 6)

Bintang Tamu

Jung Eun Pyo

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

Bintang Tamu

Jang Dae Woong

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

Bintang Tamu

Yoo Yong

as [Sisters killer] (Ep. 2, 9)

Bintang Tamu

Kim Woo Jin

as Police Officer Kim (Ep. 2, 14)

Bintang Tamu

Song Boo Geon

as Song Su Ho (Ep. 2, 17)

Bintang Tamu

Jung Woon

as [Gangster] (Ep. 3)

Bintang Tamu

Jung Nan Hee

as [Teacher] (Ep. 3)

Bintang Tamu

as [Prisoner] (Ep. 3)

Bintang Tamu

Jung Hee Young

as [Store owner] (Ep. 3)

Bintang Tamu

Baek Jae Woo

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

Bintang Tamu

Kim Ha Eon

as Kim Han Guk (Ep. 3-4)

Bintang Tamu

Park Eun Young

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

Bintang Tamu

Son Woo Hyun

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

Bintang Tamu

Kang Suk Won

as [Talk show guest] (Ep. 4)

Bintang Tamu

O Ji Yeong

as [Talk show guest] (Ep. 4)

Bintang Tamu

Jang Jae Kwon

as [Talk show guest] (Ep. 4)

Bintang Tamu

Park Jae Wan

as [Police commissioner] (Ep. 4)

Bintang Tamu

Jo Wan Ki

as Reporter Yang (Ep. 4-5)

Bintang Tamu

Park Ki Ryung

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

Bintang Tamu

Oh Seung Chan

as Medical Examiner Park (Ep. 4, 10)

Bintang Tamu

Yang Ha Yoon

as Min Jeong (Ep. 5)

Bintang Tamu

Kim Hyo Kyung

as Byeon Min Ji (Ep. 5)

Bintang Tamu

Byun Yoon Jeong

as Mrs. O (Ep. 5)

Bintang Tamu

Kim Young Joo

as [Staff] (Ep. 5)

Bintang Tamu

Shim Yoo Seung

as [Staff] (Ep. 5)

Bintang Tamu

Uhm Hye Soo

as [Police officer] (Ep. 5)

Bintang Tamu

Kim Joo Ah

as [Orphanage employee] (Ep. 5)

Bintang Tamu

Choi Yi Sun

as [Motorcycle deliveryman] (Ep. 5)

Bintang Tamu

Chae Yeon Hee

as [Grocery store employee] (Ep. 5)

Bintang Tamu

Kim Sung Kyung

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

Bintang Tamu

Oh Min Joon

as [Bully] (Ep. 5, 9)

Bintang Tamu

Kang Ro Chae

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

Bintang Tamu

Bo Ra Na

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

Bintang Tamu

So Yun Ho

as [Police officer] (Ep. 6)

Bintang Tamu

Cha Seung Min

as [NFS staff] (Ep. 6)

Bintang Tamu

Kang Moon Kyung

as [President] (Ep. 6, 12)

Bintang Tamu

Park Joon Sang

as [Disciplinary hearing judge] (Ep. 7)

Bintang Tamu

Park Jong Moo

as [Tie-knot expert] (Ep. 7)

Bintang Tamu

Jeong Yoon Hee

as [Reporter] (Ep. 7)

Bintang Tamu

Song Jae Hee

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

Bintang Tamu

Kwon Hyuk Soo

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

Bintang Tamu

Yeo Woon Bok

as [Doctor] (Ep. 7, 14)

Bintang Tamu

Kim Su In

as Choi Hong Ju [Young] (Ep. 8)

Bintang Tamu

Hong Suk Youn

as Kim Baek Gi (Ep. 8)

Bintang Tamu

Park Hyun Jeong

as Kim Yeong Hui (Ep. 8)

Bintang Tamu

Jung Hyun Seok

as No Yeong Hun [Doctor] (Ep. 8)

Bintang Tamu

Ji Sung Geun

as [Police officer] (Ep. 8)

Bintang Tamu

Jung Byung Ho

as Jung Man Ho (Ep. 8-10)

Bintang Tamu

Go Woo Ri

as Jennifer (Ep. 9)

Bintang Tamu

Garrison Michael Farquharson-Keener

as Dr. Fallon (Ep. 9)

Bintang Tamu

Seo Min Sung

as Prison Officer Kim (Ep. 9)

Bintang Tamu

Paul Battle

as [Cambridge doctor] (Ep. 9)

Bintang Tamu

Hwang Yoon Joo

as [Stalked woman] (Ep. 9)

Bintang Tamu

Ok Il Jae

as (Ep. 9)

Bintang Tamu

Choi Yoon Bum

as Nam Yun Beom (Ep. 9-10)

Bintang Tamu

Kim Ha Neul

as Jung Su Jin (Ep. 9-10)

Bintang Tamu

Kim Moon Ho

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

Bintang Tamu

Jang Yong Chul

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

Bintang Tamu

Park Sang Hyun

as Lee Yun Jung (Ep. 10)

Bintang Tamu

Seo Yun Hyuk

as Woo Hyeong Cheol [Child] (Ep. 10)

Bintang Tamu

Park Mi Na

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

Bintang Tamu

Choi Ji Woo

as [Restaurant customer] (Ep. 11)

Bintang Tamu

Park Jung Eon

as [Judge] (Ep. 11)

Bintang Tamu

Moon Hak Jin

as [Parole officer] (Ep. 11)

Bintang Tamu

Choi Gyo Shik

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

Bintang Tamu

Ha Seung Yeon

as Angela (Ep. 14)

Bintang Tamu

Ko Eun Bi

as Angela [Young] (Ep. 14)

Bintang Tamu

Min Jung Sup

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

Bintang Tamu

Ji Tae Yang

as Kim Byeong Tae (Ep. 14)

Bintang Tamu

Kim Sung Jun

as Myung Go Nam (Ep. 14)

Bintang Tamu

Kim Bi Bi

as [Nun] (Ep. 14)

Bintang Tamu

Im Yong Soon

as [School custodian] (Ep. 14)

Bintang Tamu

Shin Soo Hyun

as Michaela (Ep. 14, 18)

Bintang Tamu

Choi Min Kyu

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

Bintang Tamu

Park Se Ryeon

as [Nurse] (Ep. 15)

Bintang Tamu

Seo Suk Gyu

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

Bintang Tamu

Lee Wang Soo

as [Computer repairman] (Ep. 15, 18)

Bintang Tamu

Jung Ja Young

as [Motel staff] (Ep. 16)

Bintang Tamu

Min Sang Chul

as [Doctor] (Ep. 16)

Bintang Tamu

Son Seung Hun

as [Insurance agent] (Ep. 16)

Bintang Tamu

Kim Young Sun

as [Science teacher] (Ep. 17)

Bintang Tamu

Kwon Oh Geon

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

Bintang Tamu

Moon Yong Il

as Prosecutor Yun (Ep. 18)

Bintang Tamu

Pyo Chang Won

as [Profiler] (Ep. 20)

Bintang Tamu

Kim Yo Han (김요한)

as [Post credit scene] (Ep. 20)

Bintang Tamu

Kim Hyo Jin

as Bang Yu Hwa

Bintang Tamu

Kim Sang Il

as Dr. Park Min Jun

Bintang Tamu

Kim Dae Kook

as [Police officer]

Bintang Tamu

Seon Yul U

as [Detective]

Bintang Tamu

Kim Young Mi

as [Announcer]

Bintang Tamu

Cho Yun U

as [Kid in alley]

Bintang Tamu

Kim Eun Jin

as [Nanny]

Bintang Tamu

Jeon Jeong Il

as [Korean department]

Bintang Tamu

Uhm Ja Yoon

as [Doctor]

Bintang Tamu

Lee Soo Yeon

Bintang Tamu

Jung Min Joon

Bintang Tamu

Kwak Min Ho

as [Prisoner] (Ep. 3)

Bintang Tamu

Park Se Jun

Composer

Kang Cheol Woo

Sutradara

Choi Joon Bae

Sutradara

Choi Ran

Screenwriter