시크릿

차승원

Det. Seong-ryeol Kim

송윤아

Ji-yeon Yu

류승룡

Je-kal

박원상

Det. Choi

오정세

Kyeong-ho

김인권

Seok-jun

박효주

Hye-jin

양은용

Eun-young

예수정

Ji-yeon's mother

이엘

Young-sook

최윤슬

Nurse

엄태구

Man on phone (uncredited)

임기홍

Detective

양근석

Plainclothes Officer 3