Composer
Director
Screenwriter
Main Role
- Ji Sung Main Role
- Lee Se Young Main Role
- Lee Kyu Hyung Main Role
- Hwang Hee Main Role
Support Role
- Jung Min Ah Support Role
- Kwon Hwa WoonHeo Joon [4th year Resident]Support Role
- Son SanHong Yun Jin [Nurse - Pain Clinic]Support Role
- Lee You MiNa Kyung Ah [Nurse - Pain Clinic]Support Role
- Kim Hye EunMin Tae Kyung [Shi Young's mother / Chief - Anesthesiology and Pain Medicine]Support Role
- Kim Young HoonHan Myung Oh [Hospital's Legal Adviser]Support Role
- Uhm Hyo SubKang Yi Moon [Shi Young's uncle / Director - Seoul Hansae Hospital]Support Role
- Oh Seung HyunMin Joo Kyung [Shi Young's aunt / Anesthesiology Professor]Support Role
- Jung Jae SungKwon Suk [Anesthesiology Professor]Support Role
- Jeon Noh MinKang Yi Soo [Shi Young's father]Support Role
- Shin Dong MiChae Eun Jung [Nurse]Support Role
- Jung In KiOh Jung Nam [Shi Young's uncle / Prison Warden]Support Role
- Oh Hyun JoongKim Won Hee [1st year Resident]Support Role
- Yoon Joo SangLee Won Gil [Frm. Minister of Health and Welfare]Support Role
- Jung Kyung Soon[Yoo Joon's mother]Support Role
- Lim Jung Min[Ophthalmology Professor]Support Role
- Lee Shin SungJeong Chan SeokSupport Role
Guest Role
- Park Shi WanCha Yo Han [Young]Guest Role
- Kim Do HoonPark Jung Bo [Prisoner] (Ep. 1-4, 23)Guest Role
- Geum Bo[Fishbone inmate] (Ep.1)Guest Role
- Lee Seung Chul[Inmate 6124] (Ep. 1)Guest Role
- Ha Do GwonJoo Hyung Woo [Mixed Martial Arts Champion] (Ep.5-8, 28)Guest Role
- Jung Hyun Seok[Hyung Woo’s Doctor] (Ep.5)Guest Role
- Ha Kyung Min[Hyung Woo’s doctor] (Ep.5)Guest Role
- Kim Jong Goo[Hyung Woo's father] (Ep. 7)Guest Role
- Choi Eun Hoo[Hyung Woo’s son] (Ep.7)Guest Role
- Jo Si Yeon[Hyung Woo’s daughter] (Ep.7)Guest Role
- Jung Ae Yeon[Hyung Woo's wife]Guest Role
- Sung Chan Ho[Doctor] (Ep.9)Guest Role
- Son Hee Soon[Guardian on elevator] (Ep.9)Guest Role
- Choi Min Geum[Pain Clinic] (Ep.10)Guest Role
- Lee Joo WonChoi Seung Won [Patient in constant pain] (Ep.10)Guest Role
- Han Tae Il[Bumps into man in Pain Clinic] (Ep.10)Guest Role
- Yoon Chan YoungLee Gi Suk [CIPA Patient] (Ep.10-12, 24-28)Guest Role
- Oh Yoo NaYoo Ri Hye [Actress] (Ep.11)Guest Role
- Cheon Young MinLee Da Hae [Phantom limb patient] (Ep. 13-16)Guest Role
- Lee Do KyungYoo Duk Gyu [Melioidosis Patient] (Ep.7, 13-14, 28)Guest Role
- Kim Joo RyoungPark Hyun Sook [‘Death talk’ attendee] (Ep.15-23)Guest Role
- Im Byung Ki[‘Death talk’ discussion leader] (Ep.16)Guest Role
- So Hee Jung[Yoo Ri Hye's sister] (Ep.17-20)Guest Role
- Choi Yoon Joon[Patient looking only for Cha Yo Han] (Ep.27)Guest Role
- Shin Shin Beom[Patient thankful to Cha Yo Han] (Ep.27)Guest Role
- Joey AlbrightLucas Smith [Doctor] (Ep. 31)Guest Role
- Seo Yoon Ah[Abdominal epilepsy patient] (Ep. 31-32)Guest Role
- Moon Hak JinKim Jung Ho [3rd-year Resident Ophthalmology]Guest Role
- Ham Sung MinYoon Sung Kyu [Kidnapper / Cancer patient]Guest Role
- Kim KyulSung Dong Ho [Anesthesiology Professor]Guest Role
- Im Dong JinShim Joon Chul [Professor of Neurology]Guest Role
- Jung Ji HoonMin Sung [Yoo Ri Hye's son]Guest Role
- Shim Hye YunJung In [Eun Jung's daughter]Guest Role
- Lee Se RangKwon So YoungGuest Role
- Ham Na YoungChoi Seul Ah [Choi Seung Won's daughter]Guest Role
- Nam Sang HeeSoo Jin [Child with Pediatric Diabetes]Guest Role
- Kang Ro ChaeHan Min JooGuest Role
- Jang Hee Soo[Anesthesiology Professor]Guest Role
- Kim Seung Hoon[Prison guard]Guest Role
- Yoon In Jo[Patient Choi Seung Won's wife]Guest Role
- Shin Yeon Suk[Patient Yoon Sung Kyu's guardian]Guest Role
- Kim Hyo Kyung[Child with Diabetes]Guest Role
- Yoon Jong Goo[Prison guard]Guest Role
- Lee Yo Sung[Cha Yo Han's father]Guest Role
- Kwon Oh Jin[Park Jung Bo’s father]Guest Role
- Ha Soo Ho[Joo Hyung Woo’s Manager]Guest Role
- Go Yong Hwa[Lee Gi Suk's mother]Guest Role
- Kim Sa Hun[Emergency Room Doctor]Guest Role
- Yong Jin[Prisoner]Guest Role
- Park Mi Ri[Nurse]Guest Role
- Lee Min Sik Guest Role
- Lee Ah Jin[Mother of child with pediatric diabetes]Guest Role
- Jang Yu JinMajorGuest Role
- Park Jung EonChae Eun Jung's older sister (ep.13)Guest Role
- Kim Ah Ram[Guardian of elderly patient that dies in ICU]Guest Role
- Moon Joo WonLee Yoo Joon [Young]Guest Role
- Kim Mi Hye[Questioner]Guest Role
- Park Si Won Guest Role
- Lee Chang Won Guest Role
- Lee Dong Kyu[Reporter]Guest Role
- Kwak Gi Hun[Prisoner]Guest Role
- Ahn Dong Yeob(Ep. 1)Guest Role
- Shin Hee Gook[Intern]Guest Role
- Ahn Jae Jun[Guardian]Guest Role
- Jun Eun Mi[Restaurant owner]Guest Role
- Kim Jung HwanAhn Seung Hyun [Reporter] (Ep. 8)Guest Role
- Noreen Joyce Guerra[Flight attendant]Guest Role
- Seo Soo Min[Bookstore clerk]Guest Role
- Kim Jung Han[Prisoner]Guest Role
- Kwak Na Yeon[Lobby scene]Guest Role
- Kim Seung Hyun[Inmate]Guest Role
- Jun Jung Il[Middle-aged son]Guest Role
- Choi Yo Woon[Head nurse]Guest Role
- Park Jin Young[Nurse]Guest Role
- Kim I San[Husband]Guest Role
- Kim Shi Woo[Photograph boy]Guest Role
- Park Hyun Jeong[Girl's mother]Guest Role
Unknown
- Park Jin Soo Unknown
- Park Kyung Bok Unknown
- Kim Young Hee Unknown
- Kim Yong Seok Unknown
- Kim Shin Yul Unknown
- Kim Yeon Ji Unknown
- Kim Min Seok Unknown
- Byun Yoon Jeong Unknown
- Jung Min Seok Unknown
Bit part
- Andreas FronkUFC FighterBit part
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