An industry research director, Isomura, is killed in a suspected hit-and-run, but his employee, Hinuma, believes it was murder, not an accident.
| Actor | Role |
|---|---|
 Jiro TamiyaNot listed | Not listed |
 Hideo TakamatsuNot listed | Not listed |
| NNobuo MinakataNot listed | Not listed |
 Eiko TakiNot listed | Not listed |
 Yūnosuke ItōNot listed | Not listed |
| KKōichi ItōNot listed | Not listed |
 Tatsuo HanabuNot listed | Not listed |
| KKenichi TaniNot listed | Not listed |
 Yūzō HayakawaNot listed | Not listed |
| KKyōko ŌnishiNot listed | Not listed |
| JJutarō HōjōNot listed | Not listed |
 Kenji OyamaNot listed | Not listed |
 Gen HaradaNot listed | Not listed |
 Sho NatsukiNot listed | Not listed |
| KKenji NagataNot listed | Not listed |
 Yosuke TakemuraNot listed | Not listed |
 Reiko HibikiNot listed | Not listed |
 Eiichi TakamuraNot listed | Not listed |
| AAkira YokoyamaNot listed | Not listed |
 Kenichi MiyajimaNot listed | Not listed |
| KKuriko KodaNot listed | Not listed |
 Machiko HorikawaNot listed | Not listed |
| TToshiyuki OharaNot listed | Not listed |