Secret

Kim Seong-ryeol

Yu Ji-yeon

Je-kal

Det. Choi

Kyeong-ho

Seok-jun

Hye-jin

Eun-young

Ji-yeon's Mother

Young-sook

Nurse

Man on Phone

Detective

Plainclothes Officer

Cho Dong-cheol

Goo Cheol-seung

Doctor