Phantom () is a 2023 South Korean period spy action thriller film based on Mai Jia's 2007 novel, Feng Sheng. It was directed by Lee Hae-young, starring Sul Kyung-gu, Lee Hanee, Park So-dam, Park Hae-soo, and Seo Hyun-woo. The film was released theatrically on January 18, 2023.
In 1933, during the Japanese colonization of Korea, the story begins with an underground anti-Japanese organization's failed attempt to assassinate the new Japanese resident-general on his first day in Seoul. The Japanese colonial government gathers five suspects in a remote hotel on a seaside cliff to hunt down "phantom," a spy planted by an anti-Japanese organization in Gyeongseong, within a day. Caught up in the game of life and under close scrutiny by the Japanese authorities, the suspects snoop around the rooms and search others' belongings to clear their suspicions.
Principal photography began on January 4, 2021 and ended on May 21.
The film was released on January 18, 2023 on 1099 screens. The opening recorded 41,499 admissions.
, with gross of US$5,188,615 and 664,146 admissions, it is the sixth highest-grossing Korean film of 2023.