"One night, in a thunderstorm, Zhang died after falling from a highrise. During the investigation, dismal, harboring, doubt, questioning, lies, and dark clouds filled the heart of each person involved. Not until you turn to the last page of the book, you will not know who the killer is"--Provided by vender.

"Chief designer of FY Games Company, Tianbao, died. He left the logo of FY Company at the site of his death. In addition, he left a bug in the FY Games that will reveal an earth shaking secret of Beijing. Criminal psychologist is sent to investigate the case.