A Killer's Key
A lone wolf assassin, masquerading as a traditional dance instructor named Nitta, is called in to avert a potential financial scandal that threatens to engulf a powerful yakuza group with ties to influential figures in the political establishment.
- Year: 1967
- Country: Japan
- Genre: Thriller, Crime
- Studio: Daiei Film
- Keyword: sequel, japanese noir
- Director: Kazuo Mori
- Cast: Raizō Ichikawa, Kō Nishimura, Tomomi Satō, Isao Yamagata, Ichirō Nakatani, Yoshio Kaneuchi

