The Thin Line is a 1966 film directed by Mikio Naruse. The writer, Toshirō Ide, based it on the 1951 novel The Thin Line by Edward Atiyah, so the film is also known by the novel's title in some English sources. The film starred Keiju Kobayashi, Michiyo Aratama, and Mitsuko Kusabue.
|Keiju Kobayashi||Isao Tashiro|
|Michiyo Aratama||Masako Tashiro|
|Mitsuko Kusabue||Yumiko Kato|
|Tatsuya Mihashi||Ryukichi Sugimoto|
|Akiko Wakabayashi||Sayuri Sugimoto|
|Chiharu Inayoshi||Hiroshi Tashiro|