비밀

Sung Dong-il

Detective Lee Sang-Won

Kim You-jung

Lee Jung-Hyun

손호준

Nam Chul-Woong

Seo Yea-ji

Kang Yoo-sin

Jin Kyung

Reporter Kim

조은주

Ms. Kim

İm Hyung-jun

Nam İl-woo

Lee Kyung-jin

Yoo-sin's mother

Choi Yu-ri

Shin Ki-jung