텔 미 썸딩

한석규

Detective Cho

심은하

Chae Su-yeon

장항선

Detective Oh

Yu Jun-sang

Kim Ki-yeon

염정아

Oh Seung-min

안석환

Prosecutor Gu

김정학

Detective Lee

Gil Eun-hye

Young Soo-yeon

Park Cheol-ho

Section Chief Yoo

Lee Hwan-jun

Detective Kim

Kwon Tae-won

Chae Yong-hoon

이대로

Chief of Police

Maeng Bong-hak

Museum Colleague

권남희

Soo-yeon's Mother

박정미

Museum Colleague

박준화

Kid

이정현

Conscripted Police Officer