Min Soo-ah
Kim Ha-neul
Kwon Gi-sub
Yoo Seung-ho
Detective 1
Won Pung-yeon
Detective 2
Choi Eun-suk
Detective 3
Oh Dae-hwan
Detective 4
Jeon Joo-woo
Min-joo
Song Min-ji
Detective Jo
Jo Hee-bong
Myung-jin
Yang Yeong-Jo
School Director
Kim Mi-kyeong
Detective Chief
Park Choong-seon
Min Dong-hyun
Park Bo-gum
Jeong-yeon
Sa-hee
Doctor
Kim Kyung-ik
Detective from Information Section
Phillip Choi
Director
Ahn Sang-hoon
Writer
Choi Min-Seok
Lighting Director
Shin Sang-yeul
Stunts
Choi Bong-rock
Lee Tae-yeong
Director of Photography
Sohn Won-ho
Camera Operator
Kim Sun-ryung
Art Direction
An Ji-hye