Monster (2014 film)

Monster Hangul RRMonseuteo is a 2014 South Korean thriller film written and directed by Hwang Inho, starring Lee Minki and Kim Goeun.

Taesoo is a merciless, unpredictable serial killer who commits brutal murders for no reason, then methodically covers up his tracks. He cares deeply for his adoptive family, stepmother Kyeongja and older brother Iksang, who took him in as a young boy. But it was his familys opportunistic attitude to exploit Taesoo despite their disgust and fear towards him that only aggravated the loneliness and monstrosity within him.Eventually, Kyeongja and Iksang secretly bring in some gangsters in an attempt to kill Taesoo. With his animalistic senses, Taesoo escapes death, but ends up getting terribly injured. Boksoon finds Taesoo just then, and a deadly battle unfolds between this frail but strong young woman and the bemused, ruthless killer that ruined her life. ........

Source: Wikipedia