Stranger is a South Korean crime thriller drama television series. It was created by Studio Dragon writer Lee Soo-yeon and broadcast on tvN from June 10, 2017. The series was renewed for a second season, which premiered on August 15, 2020. In the first season, Hwang Si-mok (Cho Seung-woo) is an exemplary prosecutor who suffers from hypersensitivity to certain sound frequencies.