This was a quick easy read. However I felt that the killer's identity was pretty easy to figure out, however, it was harder to figure out how the crime was committed.

It was interesting to see how the detectives went about looking for evidence to indict or disprove who the killer is. Detectives Kusangi had made up his mind who he thought the killer was and was searching for a way to disprove Detective Utsumi's view of the person who was guilty. She is a new recruit and pretty clever for someone so new of the force. Of course the clever physics professor was the hero as he was able to figure out the with the help of Dective Utsemi.

The friction between Kusangi and professor Yukawa was a little off putting to me. Thought it detracted from the story.

Foreign detective stories seem to be "in" at the present time. For those who like to read mysteries should give it a try.