Characters played by Kim Hee-seon
Yoon Tae Yi
Park Sun Young
Characters played by Joo Won
Park Jin Gyeom
Characters played by Da-In Lee
Kim Do Yeon
Characters played by Choi Wonyoung
Seok Oh Won
Characters played by Si-Yang Kwak
Yoo Min Hyuk
Characters played by Jae-yoon Lee
Kim Dong Ho
Characters played by Jeong Wook
Ha Yong Seok
Characters played by Jihyuk Song
Hong Jung Wook
Characters played by Kim Sang-Ho
Go Hyun Seok
Characters played by Seung-eon Hwang
Oh Shi Young (Alice)
Characters played by Kyeong-nam Kim
Ki Cheol Am (Alice)
Characters played by Yang Ji-il
Choi Seung Pyo (Alice)
Characters played by Yeonwoo
Yoon Tae Yeon
Characters played by Bae Hae-Sun
Kim In Sook
Characters played by Oh Yeong-Sil
Tae Yi's mother
Characters played by Jung-woo Choi
Tae Yi's father
Characters played by Min Jun Ho
Kim Jung Bae
Characters played by Sun Ah
Jung Hye Su (Alice)
Characters played by In-soo Park
Lee Se Hoon
Characters played by Yeon-ah Oh
Hong Eun Soo's mother
Characters played by Seo Yi-Soo
Hong Eun Soo
Characters played by Choi Hong-il
Yoon Jong Soo
Characters played by Dong-gyun Kim
Kim Do Yeon's father
Characters played by Lee Jin-Ah
Kim Do Yeon's mother
Characters played by Kim Ji-Yu
Tae Yi (child)
Characters played by Joo-man Yoon
Joo Hae Min
Characters played by Seung-hyeong Lee
Hong Eun Soo's father
Characters played by Park Ok-chool
Meat shop lady
Characters played by Hyun-Sung Jang
Jang Dong Shik
Characters played by Lee Su-Woong
Jung Ki Hoon
Characters played by Gwang-jae Seo
Medical Examiner
Characters played by Moon Ju-won
Park Jin Gyeom (child)
Characters played by Woo-Jin Moon
Park Jin Gyeom (young)
Characters played by Carson Allen
English teacher
Characters played by Ahn Soo-bin
Kindergarten Teacher
Characters played by Hee-jin Choi
Doctor (Alice)
Characters played by Lee Jung-Hyun
Yang Hong Seob
Characters played by Sin Dong-ryeok
Doctor
Characters played by Jin-yeong Park
Professor
Characters played by Na Moo Choi
Apartment Witness