
About this season
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.
Episodes (12)

1. The Standing Man
Aired 16 April 2012 • 54 min

2. The Locked Room
Aired 23 April 2012 • 54 min

3. The Labyrinth of the Board Edge
Aired 30 April 2012 • 54 min

4. Black Fang
Aired 7 May 2012 • 54 min

5. The Room That Wasn't Locked
Aired 14 May 2012 • 54 min

6. Locked Room Theater
Aired 21 May 2012 • 54 min

7. The House of Will-o'-the-Wisp
Aired 28 May 2012 • 54 min

8. Only the Dog Knows
Aired 4 June 2012 • 54 min

9. The Deceived Man
Aired 11 June 2012 • 54 min

10. The Glass Hammer (1)
Aired 18 June 2012 • 54 min

11. The Glass Hammer (2)
Aired 25 June 2012 • 54 min

12. Special
Aired 3 January 2014 • 90 min