This is a crime investigation novel that starts with Satoru Takahashi, picking up a call on his first day of work; that call turns out to be from a serial killer named Anubis, and the serial killer starts a game with Satoru Takahashi. In the end, Satoru finds out that there is a mastermind named Z who created this killer, and he is going to create many more killers like this in alphabetical order, with each name pointing to an evil god or name that has connections to death. Then the story goes on with Satoru trying to find all the identities of the killer that was created by Z, and will he ever be able to find the real identity of the mastermind Z? Many misteries are introduced in the novel. The original author 'Nie Li 'bring you this thrilling skyscraper suspense!