Overview
Ninth and final film in the Boy Detectives Club series. Features Tatsuo Umemiya's film debut.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 21 | December 12, 2019 (81) | |
 | - | - | |
 | 13 | 80 | |
 | 45 | April 3, 1979 (65) | |
 | 37 | September 27, 2016 (95) | |
 | 40 | July 13, 1986 (68) | |
| - | - | |
 | 48 | May 9, 1980 (69) |