Goo Joo-wol / Detective Ma Dong-wook
Lee Hee-jin / Kim Hae-young
Soo-jung / Kyung-sook
Publisher Kwak / Detective squad chief Kwak
M
Goo Joo-ro
Director Hwang
Ui-Gyu
Juwol's Homeroom Teacher
art teacher
Baek Sun-il
Joo-hee
Baek Sun-young
Secretary
Detective
Young-shik / President Jo
