Yuzo Kayama plays the protagonist, a whale-hunting cannon manufactuing supervisor, whose brother is an automobile tester for Komatsu Motors which has a fatal accident. As his brother investigates the "Accident" with his old college friend (makoto Sato), now a reporter... They stumble across murder, espionage and cover-ups. High-class night club, femme fatale, and a "Blueprint of Murder" all adds up to a bigger plot then first expected.
| Actor | Role |
|---|---|
 Yūzō KayamaJirô Kusaka | Jirô Kusaka |
 Makoto SatōKen Sudô | Ken Sudô |
 Tatsuya MihashiAzuma, police detective | Azuma, police detective |
 Kumi MizunoTomi | Tomi |
 Mie HamaKyôko Komatsu | Kyôko Komatsu |
 Mickey CurtisMiki | Miki |
 Seizaburō KawazuYûsaku Ôshima | Yûsaku Ôshima |
 Ichirō NakataniShizuo Komatsu | Shizuo Komatsu |
 Hideyo AmamotoNot listed | Not listed |
| KKan HayashiNot listed | Not listed |
 Akihiko HirataNot listed | Not listed |
 Naoya KusakawaMaekawa | Maekawa |
 Kō MishimaIchirô Kusaka | Ichirô Kusaka |
 Tadao NakamaruAkira Shima | Akira Shima |
 Yutaka NakayamaNot listed | Not listed |
 Masaya NiheiNot listed | Not listed |
| MMasanobu OkiNot listed | Not listed |
 Sachio SakaiNot listed | Not listed |
 Ikio SawamuraNot listed | Not listed |
 Yukiko ShimazakiSinger at Paloson | Singer at Paloson |
 Toki ShiozawaNot listed | Not listed |
 Kazuo SuzukiNot listed | Not listed |
| HHiroshi TakagiNot listed | Not listed |
 Akira WakamatsuNot listed | Not listed |
 Michino YokoyamaNot listed | Not listed |
 Haruo NakajimaNot listed | Not listed |