Starring: Taiki Matsuno, Masashi Tamaki
Inspector Kenmochi the Murderer File 3 - S1-E21
Plot hole: During the blackout, the people who will turn out in the next episode to be the killer and the victim say things (in monologue) and act in ways that don't make sense in relation to the plot and are merely meant to cheat the audience.
The Prison Prep School Murder Case File 3 - S1-E12
Audio problem: Someone "accidentally" drops an eraser, drawing the teacher's attention. It's a soft pencil eraser with no additional parts, but it falls with a clicking noise as if it were made of hard plastic. (00:08:30)