하정우
Goo Joo-wol / Detective Ma Dong-wook
공효진
Lee Hee-jin / Kim Hae-young
유인나
Soo-jung / Kyung-sook
Jo Hee Bong
Publisher Kwak / Detective Squad Chief Kwak
Lee Byung-joon
M
지진희
Goo Joo-ro
곽도원
Director Hwang
서현우
Yi-gyu
?
손병욱
Juwol's Homeroom Teacher
전수지
Art Teacher