This is the first film in the third installment of the adventure film for boys that depicts the battle between a thief who calls himself "the secret envoy of the Demon Lord" and private investigator Hideo Sayama. In the Toei, the roles are twenty faces and Kogo (Twenty Faces) and Akechi Kogo, with a content that seems to be strongly conscious of the "boys' Detectives" series of Edogawa Rampo, which was later made into a movie.
| Actor | Role |
|---|---|
 Kōji NanbaraNot listed | Not listed |
 Susumu NamishimaNot listed | Not listed |
 Hiroko MikasaNot listed | Not listed |
| HHiroshi YamateNot listed | Not listed |
| YYasushi NagataNot listed | Not listed |
| YYuko HinokiNot listed | Not listed |
 Hitomi NakaharaNot listed | Not listed |
| TToyoko OtsuNot listed | Not listed |
 Isamu YamaguchiNot listed | Not listed |
 Takashi KandaNot listed | Not listed |
| KKoji SaharaNot listed | Not listed |
| TTadashi MinamikawaNot listed | Not listed |
| YYōyō KojimaNot listed | Not listed |
| KKunio HaraNot listed | Not listed |
| KKeiichi MiyoshiNot listed | Not listed |
 Mayumi FujisatoNot listed | Not listed |
 Chiaki TsukiokaNot listed | Not listed |
| KKaoru NakanoNot listed | Not listed |
| EEiran YoshikawaNot listed | Not listed |
| GGiichi SugiNot listed | Not listed |
| FFumiko SayamaNot listed | Not listed |
| KKyosuke MakinoNot listed | Not listed |
| HHidemaro TakaharaNot listed | Not listed |
| TTokio KozukaNot listed | Not listed |
| HHiroshi TakadaNot listed | Not listed |