'' Office '' ( ) is 2015 South Korean slasher-thriller film directed by Hong Won-chan and starring Go Ah-sung and Park Sung-woong . It is about a detective trying to figure out why a mild-mannered man has killed his family and is targeting his co-workers . The film premiered at the Midnight Screenings section of the 2015 Cannes Film Festival
2015 Cannes Film Festival
2015 Cannes Film Festival
Office (2015 South Korean film)