When wealthy pharmaceutical magnate Sahei Inugami dies in 1949, his family gathers for the reading of his will, only to discover that his enormous fortune has been left under extraordinary conditions. Detective Kosuke Kindaichi is drawn into the inheritance dispute when the family begins to turn against itself and a series of murders follows. As Kindaichi investigates the Inugami family's tangled relationships and long-hidden secrets, the mysterious return of Sahei's grandson Sukekiyo—whose face is concealed behind a white mask after suffering severe injuries during the war—adds another layer to the deadly mystery.
| Actor | Role |
|---|---|
 Kiichi NakaiNot listed | Not listed |
 Naomi ZaizenNot listed | Not listed |
 Ken IshiguroNot listed | Not listed |
| MMasaaki ShireiNot listed | Not listed |
 Hitoshi OzawaNot listed | Not listed |
 Mariko OkadaNot listed | Not listed |
 Utako MitsuyaNot listed | Not listed |
 Mieko YukiNot listed | Not listed |
| KKenzo KanekoNot listed | Not listed |
 Tomisaburō WakayamaNot listed | Not listed |
 Kibaji TankoboNot listed | Not listed |
| HHana KawadzuNot listed | Not listed |
 Shinobu YukiNot listed | Not listed |
 Keiju KobayashiNot listed | Not listed |
| CChinu IzumiNot listed | Not listed |
| NNaoyuki FuchinoNot listed | Not listed |
| HHiroya MoritaNot listed | Not listed |
 Takuro TatsumiNot listed | Not listed |
 Chu AraiNot listed | Not listed |
 Shingo YanagisawaNot listed | Not listed |
 Iyo MatsumotoNot listed | Not listed |
 Yuko AsanoNot listed | Not listed |
 Tomiko IshiiNot listed | Not listed |
 Kinzō SakuraNot listed | Not listed |