Phantom

An action-espionage film set in 1933, during the Japanese colonization of Korea. The film will tell the story of five suspects who are under suspicion of being the mysterious “Ghost,” a spy for the anti-Japanese resistance. Trapped inside an isolated hotel to be interrogated, the five characters must use their wits to fight to escape while also suspecting and doubting one another.
(Source: Soompi)
~~ Adapted from the novel "Feng Sheng" (风声) by Mai Jia (麦家).