Four 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...
Koji Yakusho as Shunsuke Namiki
Hiroko Yakushimaru as Minako Namiki
Etsushi Toyokawa as Masaru Tsukumi
Akira Emoto as Tomoharu Fujima
Fukumi Kuroda as Kazue Fujima
Shingo Tsurumi as Takashi Sekiya
Kaoru Sugita as Yasuko Sekiya
Yuko Mano as Eriko Takashina
In an interview with Midnight Eye, the director Shinji Aoyama said, "I wanted to talk about whether parents really understand their kids and vice-versa. That's really the most basic thing the film is about." In an interview with The Japan Times, he stated that it was a story about ordinary people, saying "At first they don't understand anything -- then they find out little by little. There's no professional detective. Everyone is an amateur. It's an all-amateur mystery."
Mark Shilling of The Japan Times gave the film 3.5 stars out of 5. He felt that the film was "less a commercial whodunit with a gorgeous corpse than a dark, multilayered psycho-drama, whose subjects include the ills of the Japanese educational system and the moral limits of parental love." However, he also noted that it was "more mainstream" than Shinji Aoyama's other films. He concluded by saying, "the film does pose a timely question. In a winner-take-all society, how can one compete successfully and stay human? The answer may be staring us in the face, albeit from the bottom of a lake." Russell Edwards of Variety said, "[Koji] Yakusho delivers yet another credible performance. Other thesps are solid and tech credits are excellent."