Secret Visitor (2015)

Original title: 은밀한 방문자

Have you had a bitter experience because of a stranger you let in your house? Don’t be a good Samaritan inviting a stranger into your house recklessly. Chang-soo invites a stranger man to his house, whom he met through his photography hobby club. The two drinks together and fall asleep. When Chang-soo wakes up, he finds himself tied up and there stands his wife looking scared.