Tell Me Something

Han Suk-kyu

Detective Cho

Shim Eun-ha

Chae Su-yeon

Jang Hang-seon

Detective Oh

Yu Jun-sang

Kim Ki-yeon

Yum Jung-ah

Oh Seung-min

Ahn Suk-hwan

Prosecutor Gu

Kim Jung-hak

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

Lee Dae-ro

Chief of Police

Maeng Bong-hak

Museum Colleague

Kwon Nam-hee

Soo-yeon's Mother

Park Jeong-mi

Museum Colleague