Episode 4 S01 E04

Lee Jong-suk (as Park Changho) Yoona (as Go Miho) Kim Ju-hun (as Choi Doha) Kwak Dong-yeon (as Jerry) Yang Kyung-won (as Gong Jihoon) Ok Ja-yeon (as Hyeon Joohee) Oh Eui-sik (as Kim Soontae) Kim Jeong-hyeon (as Jung Chaebong) Lee Yoo-jun (as Han Jaeho) Oh Ryoong (as Lee Doogeun) Yoon Seok-hyun (as Cha Seungtae) Park Hoon (as Seo Jaeyoung) Kim Kyu-seon (as Ashley Kim) Jang Hyuk-jin (as Choi Jungrak) Kim Sun-hoa (as Park Miyoung) Park Se-hyun (as Jang Heejoo) Jeong Jae-seong (as Park Yoongab) Kang Hyung-wook (as No Bak) Lee Ki-young (as Go Gikwang) Kim Dong-won (as Gan Soocheol) Hong Ji-hee (as Jang Hyejin) Song Gyeong-cheol (as Yang Choonsik) Yoo Tae-joo (as Tak Gwangyeon) Jeon Kuk-hwan (as Chairman Kang Seonggeun) Lee Seung-Hyung (as Chairman Kang's secretary) Han Dong-ho (as Secretary Jo) Jung Yeon (as Kim Gyeongsook) Lee Chang-jik (as Choi Haesoo) Lee Seo-An (as Cha Seungtae's wife) Kim Kyu-na

secret organization greed investigation film noir murder conspiracy lawyer mysterious killer mysterious death mysterious messages mysterious figure