Search Out (Korean: 서치 아웃; RR: Seochi Aut) is a 2020 South Korean thriller film written and directed by Kwak Jung, starring Lee Si-eon, Kim Sung-cheol and Heo Ga-yoon.

Inspired by the Blue Whale Challenge, it was released on April 15, 2020.

[1] A trainee policeman, a job seeker and a hacker team up to find out who sent the message "What is the significance of your life?"

Director and screenwriter Kwak Jung "wanted to dig deep into how social media is misused as an instrument of crime, to raise awareness of social isolation among young adults and to discuss fundamental questions surrounding life and death.

[3] The film topped the domestic box office on its release day despite the COVID-19 pandemic.