Shonen Tanteidan: Kabu to Mushi no Yoki (1957) [Movie] IMDb TMDB

少年探偵団　かぶと虫の妖奇

director: Hideo Sekigawa actor: Eiji Okada / Masako Nakamura …

other title: 少年探偵団　かぶと虫の妖奇

A man with many disguises uses robotic beetles, man-made monsters and other devices to try and steal atomic power.

The Boy Detectives Club – The Iron Fiend (1957) [Movie] IMDb TMDB

少年探偵団　鉄塔の怪人

director: Hideo Sekigawa actor: Eiji Okada / Masako Nakamura …

other title: 少年探偵団　鉄塔の怪人

Fourth film in the Boy Detectives Club series.

The Boy Detectives Club – The Devil with Twenty Faces (1956) [Movie] TMDB IMDb

少年探偵団　第二部　二十面相の悪魔

director: Tsuneo Kobayashi actor: Kōji Nanbara / Hitomi Nakahara …

other title: 少年探偵団　第二部　二十面相の悪魔

Second film in the Boy Detectives Club series.

The Boy Detectives Club – Doctor Phantom (1956) [Movie] TMDB IMDb

少年探偵団 妖怪博士

director: Tsuneo Kobayashi actor: Kōji Nanbara / Hitomi Nakahara …

other title: 少年探偵団 妖怪博士

First film in the Boy Detectives Club series.