Seventh film in the Boy Detectives Club series.
Susumu Namishima
Hitomi Nakahara
Yūnosuke Itō
Hiroshi Yamate
Yasushi Obata
Mitsue Komiya
Sanae Mitsuoka
Akiko Kazami
Takashi Kanda
Jiro Takagi
Tokuro Konishi
Jun Usami