I, the Executioner (みな殺しの霊歌, Minagoroshi no Reika, aka Requiem for a Massacre) is a 1968 Japanese neo-noir crime thriller film directed by Tai Kato, who co-wrote the screenplay with Haruhiko Mimura and Yoji Yamada, based on a story by Tadashi Hiromi. The film stars Makoto Satō as a violent criminal who avenges the death of a young boy.