Burning (2018)

Jong-su bumps into a girl who used to live in the same neighborhood, who asks him to look after her cat while she's on a trip to Africa. When back, she introduces Ben, a mysterious guy she met there, who confesses his secret hobby.
Crime, Drama, Mystery, Thriller · Starring Yoo Ah-in, Steven Yeun, Jeon Jong-seo, Kim Soo-Kyung