Ha Jung-woo
Goo Joo-wol / Detective Ma Dong-wook
Gong Hyo-jin
Lee Hee-jin / Kim Hae-young
Yoo In-na
Soo-jung / Kyung-sook
Jo Hee-bong
Publisher Kwak / Detective Squad Chief Kwak
Lee Byung-joon
M
Ji Jin-hee
Goo Joo-ro
Kwak Do-won
Director Hwang
Seo Hyun-woo
Yi-gyu
Son Byeong-uk
Juwol's Homeroom Teacher
Jeon Su-ji
Art Teacher
Choi Won-tae
Baek Sun-il
Kim Jae-hwa
Joo-hee
Park Jun-myun
Baek Sun-young
Lee Jun-hyeok
Professor Jeong
