Hmm, this appears to be a case with just one murder. A bloodbath as heavy as in the first arc has yet to appear. This episode as more like an intermezzo between the first and third episode of this arc. It didn’t provide any clues, just a lot of background info and a few theories. Furthermore, we see Isshiki Seiji along with Takahashi and Hamada. If I had to guess, one of these three was the murderer. I don’t think Isshiki did it, though he did play a huge role in the murder.
I liked the use of background music this episode. Isshiki seems to have some kind of love for classical music, especially one specific track. When he’s listening to that track, and the scene changes to another person, it has a nice effect. I also like the way that Kisaragi has a lot of different sides.