Kogoro Akechi solves the mystery of the invisible culprit and the invisible weapon.
| Actor | Role |
|---|---|
 Kinya KitaojiKogoro Akechi | Kogoro Akechi |
| MMari SatoBunyo | Bunyo |
 Jiro SakagamiInspector Namikoshi | Inspector Namikoshi |
 Mari ShiratoMiyako Aoki | Miyako Aoki |
 Hiroshi ArikawaShigeru Sekiya | Shigeru Sekiya |
 Joe ShishidoTakeo Sato | Takeo Sato |
 Kazuko YoshiyukiShizuko Aoki | Shizuko Aoki |