A hated, strict headmistress of an all-girls priory school murders a liberal teacher beloved by all the students. In order to catch her, Furuhata will have to play by her rules.

While competing on a TV game show, Furuhata investigates the murder of a costumer found dead in a locked room. He begins suspecting that the killer is none other than the undefeated quiz show champion.

A highly respected magician falls in love with his much younger assistant and murders her boyfriend in front of a captive audience which just so happens to include Furuhata and Shintaro.

A magazine editor concocts and executes the perfect murder in the snowy hills around Tokyo only to then encounter an acquaintance. He kills him too but his streak of bad luck has only just begun.

During a long bus trip to New York, a Japanese woman sitting next to Furuhata challenges him to a game. She will tell him about the perfect murder she committed and see if he is able to figure out how she got away.

A successful lawyer kills his mistress and frames Shintaro Imaizumi for the murder. When the lawyer convinces Shintaro to plead guilty, Furuhata becomes suspicious.

A devious doctor manipulates a mystery writer into staging his own murder to look like a suicide. The doctor is surprisingly good at all kinds of games (darts, pool, chess etc.) but he is no match for Furuhata when it comes to mind games.

Shintaro is trapped on a Ferris wheel with a bomb on board and if the amusement park doesn't pay the bomber until noon, it will go off. His only other hope is a young explosives expert whom Furuhata suspects is the bomber.

Furuhata's favorite screenwriter murders her domineering sister with an unknown murder weapon. In order to find the weapon and prove her guilt, Furuhata makes Shintaro become the old woman's servant.

A scheming antique dealer murders an old potter who was blackmailing him but his accomplice's thoughtless actions jeopardize his plan.