Kagi no Kakatta Heya

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Kagi no Kakatta Heya


  • Title: 鍵のかかった部屋
  • Title (romaji): Kagi no Kakatta Heya
  • Title (English): The Locked Room Murders
  • Tagline: 密室は、破れました。
  • Tagline (romaji): Misshitsu wa, yaburemashita.
  • Genre: Locked room mystery
  • Broadcast network: Fuji TV

Season 1

  • Format: Renzoku
  • Episodes: 11
  • Viewership rating: 16.0% (Kanto)
  • Broadcast period: 2012-Apr-16 to 2012-Jun-25
  • Air time: Monday 21:00
  • Theme song:
    • Opening theme: PINK KILLS by Ken Arai
    • Ending theme: Face Down by Arashi


Enomoto Kei is a security "otaku" working for a security firm, devoted to improving the securities system on a daily basis. He is not an easy person to familiarize oneself with, always collected and calm, unapproachable, a maniac in Physics, Science, Architecture and profound in other basic theoretical foundation. He is certain and proud of the fact that there is no key which he cannot unlock.

One day, Kei is asked to help reveal a mystery behind a locked room murderer. While he lacks any interest in solving the mystery, he is inevitably intrigued by the term, "Closed Doors" and decides to take on the position. He works side by side with Aoto Junko and Serizawa Gou, who are lawyers working at a major law firm. Junko is pure and forward, acting upon her instincts while Serizawa is a prideful elitist who sees time as money, and therefore, will not take on any job that is unprofitable.

Possessing a vast amount of knowledge and acute insightfulness, Kei is able to unlock the closed doors and unravel the secrets leading to the solution. Never before has there been a drama focused solely on closed doors. It's an all new original mystery that will keep you guessing every week! -- Fuji TV

User/Viewer Ratings

(4 votes)


Correlation chart


Production Credits

Episode Information

Episode Title Subtitle Ratings
01 The Standing Man Mismatched trio challenges their first locked room case 18.3 15.1
02 The Locked Room Larceny case and briquette suicide
Tonight is also a locked room case
16.5 14.7
03 The Labyrinth of the Board Edge Beautiful Shogi player vs Enomoto!
Board that speaks of the mystery of the locked room
14.4 13.8
04 Black Fang Prejudiced Murder!
The victim is spider-man!?
15.5 12.4
05 The Room That Wasn't Locked Wasn't even locked, but still a locked room case!? 15.6 12.3
06 Locked Room Theater Story of the culprit in a theater's locked room 15.4 13.1
07 The House of Will-o'-the-Wisp This time, the mystery of the locked room is not broken. 16.1 12.5
08 Only the Dog Knows Serizawa makes a huge faux pas on Mezamashi TV!? 15.4 11.9
09 The Deceived Man Because of a dishonourable locked room case, Enomoto receives a reverse proposal!? 16.0 12.7
10 The Glass Hammer
(Part 1)
"Enomoto-san, you killed him, didn't you?" 13.8 12.2
11 The Glass Hammer
(Part 2)
The day Enomoto disappears 17.5 13.4
Average 16.0 13.1

Source: Video Research, Ltd.

  • Colours of the episode titles indicate from which novel the episode is based on : Garasu no Hammer (blue), Kitsunebi no Ie (green) and Kagi no Kakatta Heya (red).
  • Episode 5 is based on Yuganda Hako from Kagi no Kakatta Heya.
  • Episode 8's title is a shortened version of the original title Inu no Mizo Shiru Dog knows.
  • Episode 9 is based on Yuruyakana Jisatsu, a short story (for Bouhan Tantei Enomoto series) written by the same author.



  • Format: Tanpatsu
  • Viewership rating: 15.9%
  • Broadcast date: 2014-Jan-03
  • Air time: 21:00
  • Theme song: Face Down by Arashi


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Production Credits

External Links

Winter 2012
Fuji TV
Summer 2012
Lucky Seven
Monday 21:00
Rich Man, Poor Woman