OCN's 2019 series Strangers from Hell (타인은 지옥이다 / Hell is Other People) is a psychological thriller to end all psychological thrillers. Ten fast-paced episodes explore the often-tumultuous depths of people's minds and often-frightening depths of today's society. It serves as a reminder about not ignoring those reaching out for help and how there may always be something lurking beneath an innocuous surface.