as Fellow Detective
as Oh Sung-bok
as Choi Kyu-dong
as Police Officer
as Boeun Cop 1
as Young Ho
as Young-hee's Father
as Shim-bok
as Teacher
as Jung-ho
as Hyeong-gu
as Choi Su-ryong
as Choi Dong-gyu
as Kim Seung Cheol [Patient]
as Kim Yong-gyun (Eps 9, 11)
as Kim Yong-gyun
as Song Gi-ho
