I'm surprised to learn this is Shichiri Nakayama’s first novel because it's such a well written and well developed novel.
Rating: 4.5 stars.
Premise: a man was found literally torn to pieces in an abandoned site of the former laboratory belonging to an international medical corporation, turned out the victim was a middle-ranked ex-employee of said corporation. Police stepped in for investigation and soon they found out the neighborhood's pet cats and dogs had been going missing, a baby also vanished out of plain sight and was never found again.
Meanwhile in Tokyo, a type of new illegal drug had been highly in demand in the black market and soon three addicted teenagers turned up going crazy and committing gruesome crime, so, who is beyond all these freak incidents?
What I truly like is the explanation for the bizarre murder mysteries, and this explanation is very creative: