Goo Hyeon Gyeong
[Min Deul Lae’s friend] (Ep. 11)
Guest Role
Ko Dong Ok
[Real estate agent] (Ep. 10)
Guest Role
Shin Hee Gook
[Night shift psychiatric nurse]
Guest Role
Park Sung Yun
[Internal Medicine chief nurse]
Guest Role
Moon Yo Han
Jin Woo (Ep. 5)
Guest Role
Seo Dong Gab
Jung Jin Seop [Judge / Oh Ri Na's Husband] (Ep. 1)
Guest Role
Byeon Gyeong Rok
[Hwang Yeo Hwan’s friend] (Ep. 6)
Guest Role
Moon Soo Young
[Bartender] (Ep. 1)
Guest Role
Jo Seung Yeon
[Grocery store employee] (Ep. 1)
Guest Role
Yang Hee Woo
Mr. Yang (Ep. 2)
Guest Role
Lee Joo Mi
[Kim Jae Hwan’s aunt] (Ep. 2)
Guest Role
Hwang Jung Yoon
[Pet store employee] (Ep. 2)
Guest Role
Lee Kyung Oh
[CEO] (Ep. 2)
Guest Role
Lee Seo Hwan
[Kim Sun Sik’s brother] (Ep. 2)
Guest Role
Lee Jung Eun
[Song Yu Chan’s mom] (Ep. 2-3, 7)
Guest Role
Jung Chung Gu
[Song Yu Chan’s dad] (Ep. 2-3, 7)
Guest Role
Lee Joo Won
[Kim Sung Sik’s boss] (Ep. 2, 4)
Guest Role
Hwang Sung Ho
[Company employee] (Ep. 2, 4)
Guest Role
Lee Ji Su
[Company employee] (Ep. 2, 4)
Guest Role
Park Jung Yeon
Hye Won (Ep. 3)
Guest Role
Ji Sung Eun
[Haunted nurse] (Ep. 3)
Guest Role
Kim Soo Yeon
[Café employee] (Ep. 3, 6)
Guest Role
Han Ji An
Song Yu Chan [Child] (Ep. 4)
Guest Role
Hong Ye Ji
[Hairdresser] (Ep. 4)
Guest Role
Ji Heon Il
[Food deliveryman] (Ep. 4)
Guest Role
Koo Min Hyuk
[Restaurant owner] (Ep. 4)
Guest Role
Choi Nam Wook
[Taxi driver] (Ep. 4)
Guest Role
Son Seung Hun
[Doctor] (Ep. 4)
Guest Role
Lee Seung Joo
Kwon Ha Yun (Ep. 5)
Guest Role
Yoon Yeo Won
[Yu Chan’s high school friend] (Ep. 5)
Guest Role
Jeon Guk Hyang
[Soo Yeon’s mother] (Ep. 5)
Guest Role
Kim Sung Yong
[Principal] (Ep. 5)
Guest Role
Chu Eun Kyung
[Park Soo Yeon’s friend] (Ep. 5)
Guest Role
Son Dong Soo
[Kwon Ju Yeong’s husband] (Ep. 5)
Guest Role
Kim Chae Won
[Ji Min’s mom] (Ep. 5)
Guest Role
Mun Seong Ryong
[Paramedic] (Ep. 5-6)
Guest Role
Shim Ji Yoo
Eun Woo (Ep. 5, 8)
Guest Role
Park Joo Young
[Soo Yeon’s husband] (Ep. 5, 8)
Guest Role
Lee Yoon Woo
Jae Min (Ep. 6)
Guest Role
Han Sang Kyung
[New Face repeater] (Ep. 6)
Guest Role
Kim Mi Ji
[Bank employee] (Ep. 6)
Guest Role
Bae Yeon Kyung
[PC room part-timer] (Ep. 6)
Guest Role
Yang Seung Wook
[Student] (Ep. 6)
Guest Role
Koo Ja Keon
[Student] (Ep. 6)
Guest Role
Lee Dong Chan
[Used book store owner] (Ep. 6)
Guest Role
Lee Kyu Hoe
[Seo Wan’s father] (Ep. 6-7)
Guest Role
Oh Min Ae
[Seo Wan’s mother] (Ep. 6-7)
Guest Role
Kim Yoo Ra
Go Yoon [Nurse] (Ep. 6-7)
Guest Role
Jung Jong Yul
[Deu Lae’s uncle] (Ep. 6, 8)
Guest Role
Lee Ho Young
[Psychiatric ward patient] (Ep. 7)
Guest Role
Yu Jae Hee
[Funeral home staff] (Ep. 7)
Guest Role
Ha Shi Yeon
[Therapy group member / suicide survivor] (Ep. 7)
Guest Role
Uhm Tae Ok
[Therapy group member] (Ep. 7)
Guest Role
Na Mi Hee
Choi Young Gi (Ep. 7-8)
Guest Role
Kim Dae Geon
Choi Jun Gi [Psychiatric patient] (Ep. 7-8)
Guest Role
Kim Min Jung
[Operating room nurse] (Ep. 8)
Guest Role
Seo Jae Won
[Bar part-timer] (Ep. 8)
Guest Role
Yoo Eun A
Han Jae Hui (Ep. 8, 10)
Guest Role
Jo Young Mi
[Patient] (Ep. 8)
Guest Role
Woo Mi Hwa
[Deu Lae’s mother] (Ep. 8-9)
Guest Role
Joo In Young
Nurse Lee (Ep. 9-10)
Guest Role
Kim Sun Hee
[White hospital caregiver] (Ep. 9-10)
Guest Role
Jung Ji Woo
[White hospital nurse] (Ep. 9)
Guest Role
Lee Se Mi
Chan Mi [Patient] (Ep. 9-10)
Guest Role
Park Jeong Yun
Yoon Ji Sun [Patient] (Ep. 9-10)
Guest Role
Go Seo Hee
Song Ae Shin (Ep. 9-10)
Guest Role
Ahn Tae Rin
Da Eun [Young] (Ep. 10)
Guest Role
So Kyu Seop
[Psychopath resident] (Ep. 10)
Guest Role
Hwang Ja Neung
[Psychopath resident] (Ep. 10)
Guest Role
Choi Ye Eun
[Psychopath resident] (Ep. 10)
Guest Role
Jo Kyung Chan
[Real estate buyer] (Ep. 10)
Guest Role
Lee Ye Joo
[Young Da Eun’s friend] (Ep. 10)
Guest Role
Park Seung A
[College student] (Ep. 10)
Guest Role
Gong Min Jung
Ms. Heo [Doctor] (Ep. 9-10)
Guest Role
Han Seo Ul
[Internal medicine patient]
Guest Role
Koo Do Kyun
[Pharmacist] (Ep. 10)
Guest Role
Hong Ru Hyeon
[Psychiatrist] (Ep. 9)
Guest Role
Seo Jin Won
[Security guard]
Guest Role
Lee Hyeon Seo
Gyeong Seo (Ep. 7)
Guest Role
Jung Ki Wook
[Patient]
Guest Role
Lee Ju Mi
[Kim Jae Hwan’s aunt] (Ep. 2)
Guest Role
Chu Yeon Gyu
[Apartment complex staff] (Ep. 10)
Guest Role
Song Kyung A
[Apartment resident] (Ep. 10)
Guest Role
Son Joo Yeon
[Apartment resident] (Ep. 10-11)
Guest Role
Ha Yi An
[High school student] (Ep. 11)
Guest Role
Hwang Sun Jung
[Patient] (Ep. 11)
Guest Role
Cha Young Mi
[Patient] (Ep. 11)
Guest Role
Yoo Byung Sun
[Guardian] (Ep. 11)
Guest Role
Kim Sun Hye
[Guardian] (Ep. 11)
Guest Role
Jeon Se Yong
[Guardian] (Ep. 11)
Guest Role
Kim Byung Chul
Kim Ok Tae (Ep. 11)
Guest Role
Kim Seung Tae
[Hospital director] (Ep. 11)
Guest Role
Lee Yeon Joo
[Elevator nurse] (Ep. 11)
Guest Role
Kim Hui Su
[Min Deul Lae’s friend] (Ep. 11)
Guest Role
Kim Joo Ah
Park Byeong Hui (Ep. 11-12)
Guest Role
Park Mi Hyun
[Park Byeong Hui’s mom] (Ep. 11-12)
Guest Role
Park Han Sol
Na Ra (Ep. 11-12)
Guest Role
Park Ji Won
[Apartment resident] (Ep. 10-11)
Guest Role
Jung Eun Seon Guest Role
