What she read was not the last words, but the indictment written by the deceased with his life. Forensic psychologist Shen Zhiyao reappears, specializing in solving the puzzle of the handwriting left by the deceased before his death. Each suicide note points to a buried truth. Criminal investigation captain Lu Zhaoheng secretly monitored her actions, Internet writer Lin Wantang used novels to guide public opinion, and undertaker Chen Yanqiu quietly erased key handwriting - and all clues point to the collective silence that no one dared to mention fifteen years ago. When the last letter appeared, Shen Zhiyao discovered that it was not a suicide note, but an invitation letter written to her.