Episode 2 S01 E02

Yoon Kye-sang Ko A-sung Yoon Kyung-ho Song Sun-mi Kwon Soo-hyun Woo Hyeon Kim Roi-ha Yun Jong-seok Seo Ji-hye Oh Cho-hee Park Eun-byeol Jin So-yeon

prison professor investigation cult murder gore torture suspense based on webcomic or webtoon