Inspector Kenmochi the Murderer File 2 - S1-E20
Continuity mistake: In the scene with Kindaichi and Miyuki talk to the old fiancé on the rooftop of the police station, the shadow cast by the building changes significantly from the beginning of the conversation to the end. (00:05:50 - 00:07:10)
Inspector Kenmochi the Murderer File 2 - S1-E20
Continuity mistake: During Reiji Aoi's flashback, the young fiancé is holding the phone with Marina's coerced text message in his right hand. Next shot and the hand is the left one. (00:06:15)
Inspector Kenmochi the Murderer File 2 - S1-E20
Continuity mistake: The forensics team member that drains the tub and performs a quick postmortem on the victim is wearing a facemask. However, in the close-up of the moment when he bags the phone as evidence, his chin is in frame and bare. (00:03:10)
Inspector Kenmochi the Murderer File 2 - S1-E20
Plot hole: One of the plot points of the episode lies in the fact that Kenmochi is accused to be the killer because only the cops had Busujima's phone number, apart from his two accomplices. That point holds absolutely no weight; the killer is a killer because he, well, killed someone, and that someone was exactly one of those accomplices. It's a fact that can't be ignored by even the most ignorant investigator, especially with the accomplice's phone being directly involved in the murder. (00:10:15)
Inspector Kenmochi the Murderer File 2 - S1-E20
Continuity mistake: When Kindaichi confronts Akechi in the corridor of the station about his decision to issue an arrest order for Kenmochi, you can notice two billboards; the one to the left has a single poster on it, and its height (compare it to the ones on the board to the right) changes between shots. (00:07:30)
Inspector Kenmochi the Murderer File 2 - S1-E20
Character mistake: Not only the program of the police station computer misspells "Matching" missing the I, but the operator says that the print on the right is Kenmochi's and the left print is the one taken from the device; it's the other way around. (00:19:20)
Inspector Kenmochi the Murderer File 2 - S1-E20
Plot hole: The brief intermission when Busujima meets the 'killer', or at least the person wearing the hat, does not make sense plot-wise and is merely a dishonest way to trick the audience. It's not even something Busujima tells someone, so it can't be characterized as a 'unreliable narrator' device. (00:18:30)
Inspector Kenmochi the Murderer File 2 - S1-E20
Continuity mistake: The lawyer is thrown back by the explosion. Lying on the gravel, hurt, he raises his head in close-up to look at the fire. In the wide shot though, he's unconscious. (00:16:30)