Kazuo Mori’s A Certain Killer (1967) is a Japanese crime noir where a quiet restaurant owner lives a double life as a cold-blooded contract killer. Stylishly minimalist, it stands as one of the sharpest examples of 1960s Japanese hitman cinema.

Kazuo Ikehiro’s A Killer’s Key (1967) adapts Shinji Fujiwara’s crime fiction into a stylish noir about gangsters, betrayal, and a mysterious key linked to underworld power struggles.