The Discloser () is a 2017 South Korean action thriller film directed by Hong Ki-seon. The film stars Kim Sang-kyung, Kim Ok-vin, Choi Moo-sung and Choi Gwi-hwa.
The story of an investigative reporter and former colonel delving into military secrets to uncover the source of a corruption case.
The Discloser was director Hong Ki-seon's fourth and last feature film, and his first film in 8 years. He died of a heart attack in December 2016 at the age of 59 (three days after he finished filming The Discloser).
The Discloser had its world premiere in the "Hong Ki-seon: The Cinema Beyond Suppression" category at the 21st Bucheon International Fantastic Film Festival on July 20, 2017. The film was released in theaters on January 24, 2018.
Yoon Min-sik of The Korea Herald praised the solid plot and dark and gritty tone of the film, as well as Choi Gwi-ha's performance as the antagonist in the film. Despite following the good versus evil format to some extent, the film hits the audience right on the head with its grounded atmosphere.