murderer encases victims in plaster

The body of a person who died an unnatural death is discovered encased in mortar like concrete in the basement of an abandoned building. Why was the person murdered this way? The next day, the investigation task force receives a phone call from the criminal who calls himself Tremi during a meeting to discuss the investigation of the case. Then, in a short time after her transfer to the First Investigative Division, Kisaragi Toko becomes the negotiator. Tremi mocks and provokes the police while offering hints regarding the murder. A second murder soon occurs just as Tremi had warned. The victim's head has been covered with concrete as they had expected. What is the criminal's motive and why is the criminal fixated with concrete? The criminal's surprising actual target soon emerges...

An obsessed sculptor kills a young women to make a perfect bronze sculpture of her. Years later at his secluded home a number of people become trapped in a web of revenge, murder and horror.

a serial killer hiding behind a rubber mask receives comeuppance from his victims, beyond the grave

After committing a terrible crime, a murderer must face the most difficult part of the murder ritual: hide the victim's body.

A masked murder constructs a kill-room while he waits for his victim to return home.

A mass murderer kills his victims, then cooks and eats them