The Locked Room Murders or Kagi no Kakatta Heya or 鍵のかかった部屋 (2012) Episodes 8 to end
The eighth episode in The Locked Room Murders or Kagi no Kakatta Heya or 鍵のかかった部屋 (2012) has Gou Serizawa (Koichi Sato), our enthusiastic lawyer, trapped into investigating the case of an accidental death with a manga artist/author dead in her own studio — he appears on a television chat show and is ambushed. He further piles misery on himself by announcing this is a murder before the expert is anywhere near the solution. All the doors and windows were locked, but this is not a locked room mystery because of the locks. In fact, several people had duplicate keys and could have entered. Except the owner of the house, having seen neighbours victimised by burglars, got a big dog that barks when anyone it does not know tries to come on to the land around the house. So the dog did not bark at any time during which the forensic analysis says the death occurred, i.e. apparently no-one entered or left the house. Except that would not explain the beer. . . It’s so refreshing when the first real clue is beer. Anyway, it’s obvious whoever did it not only had a key but threw drugged food to the dog over the hedge. With the dog incapacitated, the person with the key can now come and go without any of the neighbours hearing the barking. Except there’s then a break in at the house and not only is the dog silent but it’s also completely unharmed. So why would anyone come back into the house? And why were none of the collectible watches stolen and, hey, why has one of those watches stopped working? There’s also the fascinating way in which Japanese local authorities discourage young people from congregating in the civic parks after dark to consider.
The ninth episode has our lawyers called in to advise a firm on an international deal only to find this is probably a front for the yakuza. It seems one of the senior executives was found dead in his office, so the president of the company calls in Kei Enomoto (Satoshi Ono) to improve the security system. He installs multiple locks on the only door and a new camera system but, almost immediately, another employee is found shot inside this room. Obviously this looks bad for a firm doing its best to appear legitimate, so the team is “encouraged” to take on the case to establish how the deaths occurred. For once, I actually got a part of the answer right, but the bigger picture is very nicely rounded out with touches that never occurred to me. Indeed, the one place where the evidence can be found is pleasingly just out of sight all the time. Gou Serizawa does his best not to be intimidated despite the fairly obvious gangster backgrounds of some of the employees. But Enimoto is strangely unmoved, even when threatened.
The final two episodes run together to provide the big finale. This has a man killed inside his office on the twelfth floor of the block. There’s bulletproof glass in the windows, there are locks on the doors up from the main staircase and from the roof, there are cameras on the corridor showing all the office doors, and there’s a keypad lock on the elevator to ensure no unwelcome visitors stop at this floor. This is a company about to seek a listing on the Tokyo Stock Exchange. It specializes in medical devices to help nurse the elderly. Their two major projects involve the use of a robot to lift and carry patients around, and training monkeys to fetch and carry things for the patients. Shortly before the launch, there’s an attack on the president’s office. A bullet is found embedded in his door and there’s a break in the glass with glass fragments on the floor inside (the glass was not as bulletproof as people thought). It’s concluded that someone believed they could assassinate the president and Kei Enomoto is called in to beef up security. But before he can put the plan in motion, the president is found dead in his room. It seems he was stuck on the very top of his head where he had a skull abnormality. Although it was only a light blow, it nevertheless caused a haemorrhage and he died. When the internal office layout is investigated, only one man could have entered the president’s office to deliver the fatal blow. There’s a connecting door with the vice president who claims to have been asleep. The police duly arrest him. However, the police then receive an anonymous tip that there had been bad blood between Kei Enomoto and the president five years earlier and, with his known ability to beat security systems, he could have killed the president out of revenge.
This proves to be a very satisfying final case for this team to solve. With Kei Enomoto out of the picture, it falls to the lawyers to do some spade work. Junko Aoto (Erika Toda) slowly puts together a profile on one of the suspects, showing he has changed his identity. And then, when Kei Enomoto is released through lack of evidence (and an ambiguous confession from the vice president), Gou Serizawa has his first major idea about what actually happened. This involves the use of the medical robot which was standing in the president’s office. Unfortunately, when put to the test, the robot’s internal programming refuses to perform the predicted movements. However, this does trigger an answer from Kei Enomoto who is able to demonstrate one of the ways in which the robot could have been used. The full explanation does come at the end but, given what we’ve seen in the first nine cases, this is rather unusual. It also leads to an ending which, again, is not quite what might have been predicted. Nevertheless, it does bring this highly entertaining series to a bitter sweet conclusion. For anyone even vaguely interested in locked-room mysteries, this should be mandatory viewing. Here are ten very different types of case with very ingenious mechanisms in play.
For a review of other episodes, see:
The Locked Room Murders or Kagi no Kakatta Heya or 鍵のかかった部屋 (2012) Episodes 1 and 2
The Locked Room Murders or Kagi no Kakatta Heya or 鍵のかかった部屋 (2012) Episodes 3 and 4
The Locked Room Murders or Kagi no Kakatta Heya or 鍵のかかった部屋 (2012) Episodes 5 to 7.