The Three Undelivered Letters (1979) — Cast
Cast
| Nobuko Otowa | Sumie |
| Miyoko Nakamura | |
| Masakane Yonekura | |
| Mayumi Ogawa | Reiko Asakawa |
| Keiko Takeshita | Mihoko |
| Keiko Matsuzaka | Tomoko Oishi |
| Toru Takeuchi | |
| Jun Kashima | Mariott Employee |
| Satoko Nomiyama | |
| Shin Saburi | Mitsumasa Yonai |
| Kōsaku Yamayoshi | |
| Taku Kido | |
| Tsunehiko Watase | Minegishi Ryuhei |
| Yudai Ishiyama | |
| Yoshio Inaba | |
| Eitarō Ozawa | |
| Ryo Hikime | English Bob |
| Keizo Kanie | |
| Toshiyuki Watanabe | Mariott Employee |
| Komaki Kurihara | Noriko Tokayasu |
| Noriko Masuda | |
| Takao Kataoka | Toshiyuki Sagai |
| Ai Kanzaki | Keiko |
| Tadayuki Okamoto | Detective Fritz |
| Hideaki Komori | Detective Fritz |
| Akihiko Hanyû | |
| Yūsuke Takita | |
| Seiji Shinohara | |
| Matsuko Shiga | |
| Yumiko Sumiyoshi | |
| Tanie Kitabayashi |
Crew
| Manfred Lee | Novel |
| Yoshitarō Nomura | Director |
| Yasushi Akutagawa | Original Music Composer |
| Kyôhei Morita | Art Direction |
| Takashi Kawamata | Director of Photography |
| Frederic Dannay | Novel |
| Kaneto Shindō | Screenplay |