Pemeran Train

Yun Si Yun (윤시윤)

as Seo Do Won

Pemeran Utama

Gyeong Su Jin (경수진)

as Han Seo Gyeong

Pemeran Utama

Shin So Yool

as Lee Jung Min

Pemeran Utama

Lee Hang Na

as Oh Mi Sook [Section chief detective]

Pemeran Pembantu

Nam Moon Chul

as Seo Jae Cheol [Do Won's father]

Pemeran Pembantu

Jo Wan Ki

as Woo Jae Hyuk [Detective]

Pemeran Pembantu

Kim Dong Young

as Kim Jin Woo [Detective]

Pemeran Pembantu

Choi Seung Yoon

as Dr. Suk Min Joon (Ep. 5-12)

Pemeran Pembantu

Yoon Bok In

as Jo Young Ran [Seo Kyung's stepmother]

Pemeran Pembantu

Cha Yeob

as Lee Sung Wook [Seo Kyung's stepbrother]

Pemeran Pembantu

Kim Jin Seo

as Han Kyu Tae [Seo Kyung's father]

Pemeran Pembantu

Baek Jae Woo

as Kang Joon Young [Detective]

Pemeran Pembantu

Lee Jae In

as [Detective / World B]

Pemeran Pembantu

Lee Min Jae (이민재)

as Seo Do Won [Young]

Pemeran Pembantu

Im Chae Hyun

as Han Seo Kyung [Young]

Pemeran Pembantu

Kim Yoo Chan

as Lee Sung Wook [Young]

Pemeran Pembantu

Kwon Han Sol

as Lee Ji Young (Ep. 1-3)

Bintang Tamu

Chang Ryul

as Park Tae Kyung (Ep. 1, 9)

Bintang Tamu

Yoo Ji Hyuk

as [Detective] (Ep. 1, 6)

Bintang Tamu

Park Se Hoon

as [Police officer] (Ep. 1)

Bintang Tamu

Shin Seung Ryul

as [Police officer] (Ep. 1)

Bintang Tamu

Kim Bi Bi

as [Medical examiner] (Ep. 1-2, 7)

Bintang Tamu

Myung Seok Geun

as Kang Dong Shik [Officer] (Ep. 2)

Bintang Tamu

Kang Chung Hun

as [Reporter] (Ep. 2)

Bintang Tamu

Oh Yoo Mi

as [Attorney] (Ep. 2)

Bintang Tamu

Park Mi Na

as [Caregiver] (Ep. 2)

Bintang Tamu

Kim Chae Hyun

as [Psychiatrist](Ep. 2)

Bintang Tamu

Han Myung Hwan

as [Police officer] (Ep. 2)

Bintang Tamu

Park Jung Won

as Park Min Kyung (Ep. 3-4)

Bintang Tamu

Jang Hae Song

as Lee Jin Sung (Ep. 3-4, 6)

Bintang Tamu

Eom Ok Ran

as Jung Hyung Hee (Ep. 3, 5-7)

Bintang Tamu

Kim Jung Soo

as Park Young Tae [Pastor] (Ep. 3-4)

Bintang Tamu

Choi Se in

as [Train girl] (Ep. 3)

Bintang Tamu

Park Geon Rak

as [Detective] (Ep. 3-4)

Bintang Tamu

Oh Ki Hwan

as [Detective] (Ep. 3-5)

Bintang Tamu

Jung Hyun Seok

as [Church paster] (Ep. 3)

Bintang Tamu

Ahn Hye Won

as [Child's mother] (Ep. 3)

Bintang Tamu

Lee Chae Min

as [Host club manager] (Ep. 3)

Bintang Tamu

Choi Nam Uk

as [Train station staff] (Ep. 3)

Bintang Tamu

Gi Hwan

as [Min Kyung's husband] (Ep. 4)

Bintang Tamu

Cha Sang Mi

as [Church flyer woman] (Ep. 4)

Bintang Tamu

Jun Joon Woo

as [Police Audit Section officer] (Ep. 4)

Bintang Tamu

Park Eun Young

as [Restaurant owner] (Ep. 5)

Bintang Tamu

Uhm Tae Ok

as [Ilsuk Landscaping staff] (Ep. 5-6)

Bintang Tamu

Park Jin Young

as [Jung Kyung Hee's daughter] (Ep. 5, 9)

Bintang Tamu

Jo Yong Jin

as Dong Hyeon (Ep. 6)

Bintang Tamu

Bae Yoo Ri

as Jo Young Ran [Young] (Ep. 6)

Bintang Tamu

Yoo Chae Yeon

as Han Seo Kyung [Child] (Ep. 6)

Bintang Tamu

Seong Chan Ho

as [Man discussing Dong Hyeon] (Ep. 6)

Bintang Tamu

Lim Dong Yoon

as [Junkyard man] (Ep. 7)

Bintang Tamu

Min Dae Shik

as [Doctor] (Ep. 8)

Bintang Tamu

Jang Eui Don

as Go Jae Joon (Ep. 11)

Bintang Tamu

Kim Jong Ho

as [Station room staff] (Ep. 11)

Bintang Tamu

Park Jung Min

as [Detective]

Bintang Tamu

Jeon Jeong Il

as [Optometrist]

Bintang Tamu

Byun Gun Woo

as [Police officer]

Bintang Tamu

Han Song Ho

as [Delivery man]

Bintang Tamu

Lee Yook Heon

as [Convenience store owner] (Ep. 3)

Bintang Tamu

Kim Dam Ho

as [Bully boy] (Ep. 10)

Bintang Tamu

Kim Jin Ok

as [Neighborhood woman] (Ep. 5)

Bintang Tamu

Lee Seung Hoon

Sutradara

Steve M. Choe

Editor

Park Ga Yun

Screenwriter