Fourth film in the Boy Detectives Club series.

Seventh film in the Boy Detectives Club series.

First film in the Boy Detectives Club series.

Eighth film in the Boy Detectives Club series.

Second film in the Boy Detectives Club series.

Ninth and final film in the Boy Detectives Club series. Features Tatsuo Umemiya's film debut.

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A mercenary team’s plane goes down over a desolate, snowbound mountain. Hoping for shelter, they stumble upon a labyrinthine stone fortress that offers no escape from the bitter cold, or the nightmares inside. As the walls close in and the true nature of the structure reveals itself, a new kind of horror emerges. This isn’t survival. It’s something else entirely...

In rural France, Christophe (10) tries to live up to his rigid and distant father on the family farm. But the young boy starts to lean over and collapse without warning — on the tractor, at school, at dinner... A doctor finds the solution: Christophe must wear an iron corset to keep himself upright. Forced to reinvent his life away from the farm, Christophe discovers a new passion for music, meets a new friend, and follows her into his first mischief. But will any of this really fix what is out of balance?

The absurd adventures of two defective detectives, who - despite unbelievable incompetence - somehow manage to solve their cases (or be nearby when the cases are solved) and retain their jobs.