Summary: Three couples are staying at a lakeside cottage with their children. They want them to prepare intensely for a prestigious high school's entrance exam with the help of a private tutor. One night, one of the wives confesses to her husband that she has killed his mistress... (imdb)

AKA: Reikusaido mâdâ kêsu

Genres: Drama, Crime, Mystery

Country: Japan

Directed By: Shinji Aoyama

Written By: Shinji Aoyama, Keigo Higashino

Starring: Akira Emoto, Etsushi Toyokawa, Hiroko Yakushimaru, Kôji Yakusho, Yuko Mano

More information at the Internet Movie Database