Director: Kwang-Bok Kim Writer: Kwang-Bok Kim Star: Ji-Soo Park Screenplay by Kim Kwang-bok (김광복) Genere :- Drama •Mystery •Thriller Run Time :- 120min Release date in South Korea : 2017/09/14 Synopsis :- Hyeon-jin, a test taker, moves into an old apartment. There are strange sounds from next door where a strange boy named Hyeong-goo lives. One day, Hyeong-goo and his mother are cruelly murdered.