K-20: Legend of the Mask is a 2008 Japanese action film written and directed by Shimako Satō and based on a novel by Sō Kitamura and its sequel, and also features characters created by Edogawa Ranpo. The film was released worldwide on December 20, 2008. Takeshi Kaneshiro, Takako Matsu, Tōru Nakamura and Kanata Hongo star in the film, along with Takeshi Kaga, Fumiyo Kohinata, Reiko Takashima, Toru Masuoka and Yuki Imai.