Episode 4 S01 E04

Lee Sung-min (as Kim Taek-rok) Gyeong Su-jin (as Lee Seong-a) Lee Hak-ju (as Son Gyeong-chan) Jung Jin-young (as Choi Do-hyung) Kim Shin-rock (as Yeon Ju-hyun) Kim Hong-pa (as Seo Gwang-su) Ju Jin-mo (as Lee Young-ho) Jung Hae-kyun (as Baek Seong-il) Choi Byung-mo (as Manager Cha) Kim Min-jae (as Han Gi-yong) Kim Jae-bum (as Yang Gi-tae) Hyun Bong-sik (as Gu Dong-bum) Ko Kyu-phil (as Gong Ha-neul) Jeong In-gi (as Won Jae-gu) Kim Ji-an (as Ha-na)

detective blackmail police mysterious man murder suspect wrongfully accused psychological warfare