Kim Jin-kyu as Hyeon Gwang-ho

Moon Jeong-suk as Nam Jin-suk

Jeong Ae-ran as Head Nurse

Choi Nam-hyun as Oh Sang-gil

Dokgo Sung as Detective

Bang Seong-ja as Oh Jung-ja

Yu Gye-seon as Jeong-ja's Mother

Lee Hae-ryong as Doctor

Lim Hae-rim as Hospital Security Guard

Kim Kyeong-ran as Maid

Kim Ki-beom as Forensic Staff

Chang Hyeok as Detective

Jo Hang as Detective Squad Chief

Lee Up-dong as Worker

Ji Bang-yeol as Doctor