Signal

Lee Je-hoon (as Park Hae-young) Kim Hye-soo (as Cha Soo-hyun) Cho Jin-woong (as Lee Jae-han) Jang Hyun-sung (as Kim Bum-joo) Jung Hae-kyun (as Ahn Chi-soo) Kim Won-hae (as Kim Gye-chul) Jung Han-bi (as Oh Yoon-seo) Lee Yoo-jun (as Jung Heon-gi) Kim Min-gue (as Hwang Ui-kyung) Kang Chan-hee (as Park Sun-woo) Im Hwa-young (as Cha Soo-min)

corruption investigation murder tragic past butterfly effect dark suspense thriller